Reformat with Google code style and enforce Checkstyle.

Fixes #125

api/build.gradle

@@ -2,9 +2,11 @@ plugins {
     id 'java'
     id 'com.github.johnrengelman.shadow' version '2.0.4'
     id 'maven-publish'
+    id 'checkstyle'
 }
 
 apply from: '../gradle/checkerframework.gradle'
+apply from: '../gradle/checkstyle.gradle'
 
 sourceSets {
     ap {

api/src/ap/java/com/velocitypowered/api/plugin/ap/PluginAnnotationProcessor.java

@@ -3,7 +3,11 @@ package com.velocitypowered.api.plugin.ap;
 import com.google.gson.Gson;
 import com.velocitypowered.api.plugin.Plugin;
 import com.velocitypowered.api.plugin.PluginDescription;
-
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.Writer;
+import java.util.Objects;
+import java.util.Set;
 import javax.annotation.processing.AbstractProcessor;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.annotation.processing.RoundEnvironment;
@@ -16,73 +20,76 @@ import javax.lang.model.element.TypeElement;
 import javax.tools.Diagnostic;
 import javax.tools.FileObject;
 import javax.tools.StandardLocation;
-import java.io.BufferedWriter;
-import java.io.IOException;
-import java.io.Writer;
-import java.util.Objects;
-import java.util.Set;
 
 @SupportedAnnotationTypes({"com.velocitypowered.api.plugin.Plugin"})
 public class PluginAnnotationProcessor extends AbstractProcessor {
-    private ProcessingEnvironment environment;
-    private String pluginClassFound;
-    private boolean warnedAboutMultiplePlugins;
 
-    @Override
+  private ProcessingEnvironment environment;
-    public synchronized void init(ProcessingEnvironment processingEnv) {
+  private String pluginClassFound;
-        this.environment = processingEnv;
+  private boolean warnedAboutMultiplePlugins;
+
+  @Override
+  public synchronized void init(ProcessingEnvironment processingEnv) {
+    this.environment = processingEnv;
+  }
+
+  @Override
+  public SourceVersion getSupportedSourceVersion() {
+    return SourceVersion.latestSupported();
+  }
+
+  @Override
+  public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+    if (roundEnv.processingOver()) {
+      return false;
     }
 
-    @Override
+    for (Element element : roundEnv.getElementsAnnotatedWith(Plugin.class)) {
-    public SourceVersion getSupportedSourceVersion() {
+      if (element.getKind() != ElementKind.CLASS) {
-        return SourceVersion.latestSupported();
+        environment.getMessager()
-    }
+            .printMessage(Diagnostic.Kind.ERROR, "Only classes can be annotated with "
-
+                + Plugin.class.getCanonicalName());
-    @Override
-    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
-        if (roundEnv.processingOver()) {
-            return false;
-        }
-
-        for (Element element : roundEnv.getElementsAnnotatedWith(Plugin.class)) {
-            if (element.getKind() != ElementKind.CLASS) {
-                environment.getMessager().printMessage(Diagnostic.Kind.ERROR, "Only classes can be annotated with "
-                        + Plugin.class.getCanonicalName());
-                return false;
-            }
-
-            Name qualifiedName = ((TypeElement) element).getQualifiedName();
-
-            if (Objects.equals(pluginClassFound, qualifiedName.toString())) {
-                if (!warnedAboutMultiplePlugins) {
-                    environment.getMessager().printMessage(Diagnostic.Kind.WARNING, "Velocity does not yet currently support " +
-                            "multiple plugins. We are using " + pluginClassFound + " for your plugin's main class.");
-                    warnedAboutMultiplePlugins = true;
-                }
-                return false;
-            }
-
-            Plugin plugin = element.getAnnotation(Plugin.class);
-            if (!PluginDescription.ID_PATTERN.matcher(plugin.id()).matches()) {
-                environment.getMessager().printMessage(Diagnostic.Kind.ERROR, "Invalid ID for plugin "
-                        + qualifiedName + ". IDs must start alphabetically, have alphanumeric characters, and can " +
-                        "contain dashes or underscores.");
-                return false;
-            }
-
-            // All good, generate the velocity-plugin.json.
-            SerializedPluginDescription description = SerializedPluginDescription.from(plugin, qualifiedName.toString());
-            try {
-                FileObject object = environment.getFiler().createResource(StandardLocation.CLASS_OUTPUT, "", "velocity-plugin.json");
-                try (Writer writer = new BufferedWriter(object.openWriter())) {
-                    new Gson().toJson(description, writer);
-                }
-                pluginClassFound = qualifiedName.toString();
-            } catch (IOException e) {
-                environment.getMessager().printMessage(Diagnostic.Kind.ERROR, "Unable to generate plugin file");
-            }
-        }
-
         return false;
+      }
+
+      Name qualifiedName = ((TypeElement) element).getQualifiedName();
+
+      if (Objects.equals(pluginClassFound, qualifiedName.toString())) {
+        if (!warnedAboutMultiplePlugins) {
+          environment.getMessager()
+              .printMessage(Diagnostic.Kind.WARNING, "Velocity does not yet currently support " +
+                  "multiple plugins. We are using " + pluginClassFound
+                  + " for your plugin's main class.");
+          warnedAboutMultiplePlugins = true;
+        }
+        return false;
+      }
+
+      Plugin plugin = element.getAnnotation(Plugin.class);
+      if (!PluginDescription.ID_PATTERN.matcher(plugin.id()).matches()) {
+        environment.getMessager().printMessage(Diagnostic.Kind.ERROR, "Invalid ID for plugin "
+            + qualifiedName
+            + ". IDs must start alphabetically, have alphanumeric characters, and can " +
+            "contain dashes or underscores.");
+        return false;
+      }
+
+      // All good, generate the velocity-plugin.json.
+      SerializedPluginDescription description = SerializedPluginDescription
+          .from(plugin, qualifiedName.toString());
+      try {
+        FileObject object = environment.getFiler()
+            .createResource(StandardLocation.CLASS_OUTPUT, "", "velocity-plugin.json");
+        try (Writer writer = new BufferedWriter(object.openWriter())) {
+          new Gson().toJson(description, writer);
+        }
+        pluginClassFound = qualifiedName.toString();
+      } catch (IOException e) {
+        environment.getMessager()
+            .printMessage(Diagnostic.Kind.ERROR, "Unable to generate plugin file");
+      }
     }
+
+    return false;
+  }
 }

api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java

@@ -4,149 +4,162 @@ import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableList;
 import com.velocitypowered.api.plugin.Plugin;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 public class SerializedPluginDescription {
-    // @Nullable is used here to make GSON skip these in the serialized file
-    private final String id;
-    private final @Nullable String name;
-    private final @Nullable String version;
-    private final @Nullable String description;
-    private final @Nullable String url;
-    private final @Nullable List<String> authors;
-    private final @Nullable List<Dependency> dependencies;
-    private final String main;
 
-    public SerializedPluginDescription(String id, String name, String version, String description, String url,
+  // @Nullable is used here to make GSON skip these in the serialized file
-            List<String> authors, List<Dependency> dependencies, String main) {
+  private final String id;
-        this.id = Preconditions.checkNotNull(id, "id");
+  private final @Nullable String name;
-        this.name = Strings.emptyToNull(name);
+  private final @Nullable String version;
-        this.version = Strings.emptyToNull(version);
+  private final @Nullable String description;
-        this.description = Strings.emptyToNull(description);
+  private final @Nullable String url;
-        this.url = Strings.emptyToNull(url);
+  private final @Nullable List<String> authors;
-        this.authors = authors == null || authors.isEmpty() ? ImmutableList.of() : authors;
+  private final @Nullable List<Dependency> dependencies;
-        this.dependencies = dependencies == null || dependencies.isEmpty() ? ImmutableList.of() : dependencies;
+  private final String main;
-        this.main = Preconditions.checkNotNull(main, "main");
+
+  public SerializedPluginDescription(String id, String name, String version, String description,
+      String url,
+      List<String> authors, List<Dependency> dependencies, String main) {
+    this.id = Preconditions.checkNotNull(id, "id");
+    this.name = Strings.emptyToNull(name);
+    this.version = Strings.emptyToNull(version);
+    this.description = Strings.emptyToNull(description);
+    this.url = Strings.emptyToNull(url);
+    this.authors = authors == null || authors.isEmpty() ? ImmutableList.of() : authors;
+    this.dependencies =
+        dependencies == null || dependencies.isEmpty() ? ImmutableList.of() : dependencies;
+    this.main = Preconditions.checkNotNull(main, "main");
+  }
+
+  public static SerializedPluginDescription from(Plugin plugin, String qualifiedName) {
+    List<Dependency> dependencies = new ArrayList<>();
+    for (com.velocitypowered.api.plugin.Dependency dependency : plugin.dependencies()) {
+      dependencies.add(new Dependency(dependency.id(), dependency.optional()));
     }
+    return new SerializedPluginDescription(plugin.id(), plugin.name(), plugin.version(),
+        plugin.description(), plugin.url(),
+        Arrays.stream(plugin.authors()).filter(author -> !author.isEmpty())
+            .collect(Collectors.toList()), dependencies, qualifiedName);
+  }
 
-    public static SerializedPluginDescription from(Plugin plugin, String qualifiedName) {
+  public String getId() {
-        List<Dependency> dependencies = new ArrayList<>();
+    return id;
-        for (com.velocitypowered.api.plugin.Dependency dependency : plugin.dependencies()) {
+  }
-            dependencies.add(new Dependency(dependency.id(), dependency.optional()));
+
-        }
+  public @Nullable String getName() {
-        return new SerializedPluginDescription(plugin.id(), plugin.name(), plugin.version(), plugin.description(), plugin.url(),
+    return name;
-                Arrays.stream(plugin.authors()).filter(author -> !author.isEmpty()).collect(Collectors.toList()), dependencies, qualifiedName);
+  }
+
+  public @Nullable String getVersion() {
+    return version;
+  }
+
+  public @Nullable String getDescription() {
+    return description;
+  }
+
+  public @Nullable String getUrl() {
+    return url;
+  }
+
+  public List<String> getAuthors() {
+    return authors == null ? ImmutableList.of() : authors;
+  }
+
+  public List<Dependency> getDependencies() {
+    return dependencies == null ? ImmutableList.of() : dependencies;
+  }
+
+  public String getMain() {
+    return main;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SerializedPluginDescription that = (SerializedPluginDescription) o;
+    return Objects.equals(id, that.id) &&
+        Objects.equals(name, that.name) &&
+        Objects.equals(version, that.version) &&
+        Objects.equals(description, that.description) &&
+        Objects.equals(url, that.url) &&
+        Objects.equals(authors, that.authors) &&
+        Objects.equals(dependencies, that.dependencies) &&
+        Objects.equals(main, that.main);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name, version, description, url, authors, dependencies);
+  }
+
+  @Override
+  public String toString() {
+    return "SerializedPluginDescription{" +
+        "id='" + id + '\'' +
+        ", name='" + name + '\'' +
+        ", version='" + version + '\'' +
+        ", description='" + description + '\'' +
+        ", url='" + url + '\'' +
+        ", authors=" + authors +
+        ", dependencies=" + dependencies +
+        ", main='" + main + '\'' +
+        '}';
+  }
+
+  public static class Dependency {
+
+    private final String id;
+    private final boolean optional;
+
+    public Dependency(String id, boolean optional) {
+      this.id = id;
+      this.optional = optional;
     }
 
     public String getId() {
-        return id;
+      return id;
     }
 
-    public @Nullable String getName() {
+    public boolean isOptional() {
-        return name;
+      return optional;
-    }
-
-    public @Nullable String getVersion() {
-        return version;
-    }
-
-    public @Nullable String getDescription() {
-        return description;
-    }
-
-    public @Nullable String getUrl() {
-        return url;
-    }
-
-    public List<String> getAuthors() {
-        return authors == null ? ImmutableList.of() : authors;
-    }
-
-    public List<Dependency> getDependencies() {
-        return dependencies == null ? ImmutableList.of() : dependencies;
-    }
-
-    public String getMain() {
-        return main;
     }
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
+      if (this == o) {
-        if (o == null || getClass() != o.getClass()) return false;
+        return true;
-        SerializedPluginDescription that = (SerializedPluginDescription) o;
+      }
-        return Objects.equals(id, that.id) &&
+      if (o == null || getClass() != o.getClass()) {
-                Objects.equals(name, that.name) &&
+        return false;
-                Objects.equals(version, that.version) &&
+      }
-                Objects.equals(description, that.description) &&
+      Dependency that = (Dependency) o;
-                Objects.equals(url, that.url) &&
+      return optional == that.optional &&
-                Objects.equals(authors, that.authors) &&
+          Objects.equals(id, that.id);
-                Objects.equals(dependencies, that.dependencies) &&
-                Objects.equals(main, that.main);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(id, name, version, description, url, authors, dependencies);
+      return Objects.hash(id, optional);
     }
 
     @Override
     public String toString() {
-        return "SerializedPluginDescription{" +
+      return "Dependency{" +
-                "id='" + id + '\'' +
+          "id='" + id + '\'' +
-                ", name='" + name + '\'' +
+          ", optional=" + optional +
-                ", version='" + version + '\'' +
+          '}';
-                ", description='" + description + '\'' +
-                ", url='" + url + '\'' +
-                ", authors=" + authors +
-                ", dependencies=" + dependencies +
-                ", main='" + main + '\'' +
-                '}';
-    }
-
-    public static class Dependency {
-        private final String id;
-        private final boolean optional;
-
-        public Dependency(String id, boolean optional) {
-            this.id = id;
-            this.optional = optional;
-        }
-
-        public String getId() {
-            return id;
-        }
-
-        public boolean isOptional() {
-            return optional;
-        }
-
-        @Override
-        public boolean equals(Object o) {
-            if (this == o) return true;
-            if (o == null || getClass() != o.getClass()) return false;
-            Dependency that = (Dependency) o;
-            return optional == that.optional &&
-                    Objects.equals(id, that.id);
-        }
-
-        @Override
-        public int hashCode() {
-            return Objects.hash(id, optional);
-        }
-
-        @Override
-        public String toString() {
-            return "Dependency{" +
-                    "id='" + id + '\'' +
-                    ", optional=" + optional +
-                    '}';
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/command/Command.java

@@ -1,44 +1,46 @@
 package com.velocitypowered.api.command;
 
 import com.google.common.collect.ImmutableList;
+import java.util.List;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
-import java.util.List;
-
 /**
- * Represents a command that can be executed by a {@link CommandSource}, such as a {@link com.velocitypowered.api.proxy.Player}
+ * Represents a command that can be executed by a {@link CommandSource}, such as a {@link
- * or the console.
+ * com.velocitypowered.api.proxy.Player} or the console.
  */
 public interface Command {
-    /**
-     * Executes the command for the specified {@link CommandSource}.
-     * @param source the source of this command
-     * @param args the arguments for this command
-     */
-    void execute(CommandSource source, String @NonNull [] args);
 
-    /**
+  /**
-     * Provides tab complete suggestions for a command for a specified {@link CommandSource}.
+   * Executes the command for the specified {@link CommandSource}.
-     * @param source the source to run the command for
+   *
-     * @param currentArgs the current, partial arguments for this command
+   * @param source the source of this command
-     * @return tab complete suggestions
+   * @param args the arguments for this command
-     */
+   */
-    default List<String> suggest(CommandSource source, String @NonNull [] currentArgs) {
+  void execute(CommandSource source, String @NonNull [] args);
-        return ImmutableList.of();
-    }
 
-    /**
+  /**
-     * Tests to check if the {@code source} has permission to use this command
+   * Provides tab complete suggestions for a command for a specified {@link CommandSource}.
-     * with the provided {@code args}.
+   *
-     *
+   * @param source the source to run the command for
-     * <p>If this method returns false, the handling will be forwarded onto
+   * @param currentArgs the current, partial arguments for this command
-     * the players current server.</p>
+   * @return tab complete suggestions
-     *
+   */
-     * @param source the source of the command
+  default List<String> suggest(CommandSource source, String @NonNull [] currentArgs) {
-     * @param args the arguments for this command
+    return ImmutableList.of();
-     * @return whether the source has permission
+  }
-     */
+
-    default boolean hasPermission(CommandSource source, String @NonNull [] args) {
+  /**
-        return true;
+   * Tests to check if the {@code source} has permission to use this command with the provided
-    }
+   * {@code args}.
+   *
+   * <p>If this method returns false, the handling will be forwarded onto
+   * the players current server.</p>
+   *
+   * @param source the source of the command
+   * @param args the arguments for this command
+   * @return whether the source has permission
+   */
+  default boolean hasPermission(CommandSource source, String @NonNull [] args) {
+    return true;
+  }
 }

api/src/main/java/com/velocitypowered/api/command/CommandManager.java

@@ -4,24 +4,28 @@ package com.velocitypowered.api.command;
  * Represents an interface to register a command executor with the proxy.
  */
 public interface CommandManager {
-    /**
-     * Registers the specified command with the manager with the specified aliases.
-     * @param command the command to register
-     * @param aliases the alias to use
-     */
-    void register(Command command, String... aliases);
 
-    /**
+  /**
-     * Unregisters a command.
+   * Registers the specified command with the manager with the specified aliases.
-     * @param alias the command alias to unregister
+   *
-     */
+   * @param command the command to register
-    void unregister(String alias);
+   * @param aliases the alias to use
+   */
+  void register(Command command, String... aliases);
 
-    /**
+  /**
-     * Attempts to execute a command from the specified {@code cmdLine}.
+   * Unregisters a command.
-     * @param source the command's source
+   *
-     * @param cmdLine the command to run
+   * @param alias the command alias to unregister
-     * @return true if the command was found and executed, false if it was not
+   */
-     */
+  void unregister(String alias);
-    boolean execute(CommandSource source, String cmdLine);
+
+  /**
+   * Attempts to execute a command from the specified {@code cmdLine}.
+   *
+   * @param source the command's source
+   * @param cmdLine the command to run
+   * @return true if the command was found and executed, false if it was not
+   */
+  boolean execute(CommandSource source, String cmdLine);
 }

api/src/main/java/com/velocitypowered/api/command/CommandSource.java

@@ -7,9 +7,11 @@ import net.kyori.text.Component;
  * Represents something that can be used to run a {@link Command}.
  */
 public interface CommandSource extends PermissionSubject {
-    /**
+
-     * Sends the specified {@code component} to the invoker.
+  /**
-     * @param component the text component to send
+   * Sends the specified {@code component} to the invoker.
-     */
+   *
-    void sendMessage(Component component);
+   * @param component the text component to send
+   */
+  void sendMessage(Component component);
 }

api/src/main/java/com/velocitypowered/api/event/EventHandler.java

@@ -1,10 +1,11 @@
 package com.velocitypowered.api.event;
 
 /**
- * Represents an interface to perform direct dispatch of an event. This makes integration easier to achieve with platforms
+ * Represents an interface to perform direct dispatch of an event. This makes integration easier to
- * such as RxJava.
+ * achieve with platforms such as RxJava.
  */
 @FunctionalInterface
 public interface EventHandler<E> {
-    void execute(E event);
+
+  void execute(E event);
 }

api/src/main/java/com/velocitypowered/api/event/EventManager.java

@@ -6,68 +6,82 @@ import java.util.concurrent.CompletableFuture;
  * Allows plugins to register and deregister listeners for event handlers.
  */
 public interface EventManager {
-    /**
-     * Requests that the specified {@code listener} listen for events and associate it with the {@code plugin}.
-     * @param plugin the plugin to associate with the listener
-     * @param listener the listener to register
-     */
-    void register(Object plugin, Object listener);
 
-    /**
+  /**
-     * Requests that the specified {@code handler} listen for events and associate it with the {@code plugin}.
+   * Requests that the specified {@code listener} listen for events and associate it with the {@code
-     * @param plugin the plugin to associate with the handler
+   * plugin}.
-     * @param eventClass the class for the event handler to register
+   *
-     * @param handler the handler to register
+   * @param plugin the plugin to associate with the listener
-     * @param <E> the event type to handle
+   * @param listener the listener to register
-     */
+   */
-    default <E> void register(Object plugin, Class<E> eventClass, EventHandler<E> handler) {
+  void register(Object plugin, Object listener);
-        register(plugin, eventClass, PostOrder.NORMAL, handler);
-    }
 
-    /**
+  /**
-     * Requests that the specified {@code handler} listen for events and associate it with the {@code plugin}.
+   * Requests that the specified {@code handler} listen for events and associate it with the {@code
-     * @param plugin the plugin to associate with the handler
+   * plugin}.
-     * @param eventClass the class for the event handler to register
+   *
-     * @param postOrder the order in which events should be posted to the handler
+   * @param plugin the plugin to associate with the handler
-     * @param handler the handler to register
+   * @param eventClass the class for the event handler to register
-     * @param <E> the event type to handle
+   * @param handler the handler to register
-     */
+   * @param <E> the event type to handle
-    <E> void register(Object plugin, Class<E> eventClass, PostOrder postOrder, EventHandler<E> handler);
+   */
+  default <E> void register(Object plugin, Class<E> eventClass, EventHandler<E> handler) {
+    register(plugin, eventClass, PostOrder.NORMAL, handler);
+  }
 
-    /**
+  /**
-     * Fires the specified event to the event bus asynchronously. This allows Velocity to continue servicing connections
+   * Requests that the specified {@code handler} listen for events and associate it with the {@code
-     * while a plugin handles a potentially long-running operation such as a database query.
+   * plugin}.
-     * @param event the event to fire
+   *
-     * @return a {@link CompletableFuture} representing the posted event
+   * @param plugin the plugin to associate with the handler
-     */
+   * @param eventClass the class for the event handler to register
-    <E> CompletableFuture<E> fire(E event);
+   * @param postOrder the order in which events should be posted to the handler
+   * @param handler the handler to register
+   * @param <E> the event type to handle
+   */
+  <E> void register(Object plugin, Class<E> eventClass, PostOrder postOrder,
+      EventHandler<E> handler);
 
-    /**
+  /**
-     * Posts the specified event to the event bus and discards the result.
+   * Fires the specified event to the event bus asynchronously. This allows Velocity to continue
-     * @param event the event to fire
+   * servicing connections while a plugin handles a potentially long-running operation such as a
-     */
+   * database query.
-    default void fireAndForget(Object event) {
+   *
-        fire(event);
+   * @param event the event to fire
-    }
+   * @return a {@link CompletableFuture} representing the posted event
+   */
+  <E> CompletableFuture<E> fire(E event);
 
-    /**
+  /**
-     * Unregisters all listeners for the specified {@code plugin}.
+   * Posts the specified event to the event bus and discards the result.
-     * @param plugin the plugin to deregister listeners for
+   *
-     */
+   * @param event the event to fire
-    void unregisterListeners(Object plugin);
+   */
+  default void fireAndForget(Object event) {
+    fire(event);
+  }
 
-    /**
+  /**
-     * Unregisters a specific listener for a specific plugin.
+   * Unregisters all listeners for the specified {@code plugin}.
-     * @param plugin the plugin associated with the listener
+   *
-     * @param listener the listener to deregister
+   * @param plugin the plugin to deregister listeners for
-     */
+   */
-    void unregisterListener(Object plugin, Object listener);
+  void unregisterListeners(Object plugin);
 
-    /**
+  /**
-     * Unregisters a specific event handler for a specific plugin.
+   * Unregisters a specific listener for a specific plugin.
-     * @param plugin the plugin to associate with the handler
+   *
-     * @param handler the handler to register
+   * @param plugin the plugin associated with the listener
-     * @param <E> the event type to handle
+   * @param listener the listener to deregister
-     */
+   */
-    <E> void unregister(Object plugin, EventHandler<E> handler);
+  void unregisterListener(Object plugin, Object listener);
+
+  /**
+   * Unregisters a specific event handler for a specific plugin.
+   *
+   * @param plugin the plugin to associate with the handler
+   * @param handler the handler to register
+   * @param <E> the event type to handle
+   */
+  <E> void unregister(Object plugin, EventHandler<E> handler);
 }

api/src/main/java/com/velocitypowered/api/event/PostOrder.java

@@ -1,11 +1,10 @@
 package com.velocitypowered.api.event;
 
 /**
- * Represents the order an event will be posted to a listener method, relative
+ * Represents the order an event will be posted to a listener method, relative to other listeners.
- * to other listeners.
  */
 public enum PostOrder {
 
-    FIRST, EARLY, NORMAL, LATE, LAST;
+  FIRST, EARLY, NORMAL, LATE, LAST;
 
 }

api/src/main/java/com/velocitypowered/api/event/ResultedEvent.java

@@ -1,114 +1,119 @@
 package com.velocitypowered.api.event;
 
 import com.google.common.base.Preconditions;
+import java.util.Optional;
 import net.kyori.text.Component;
 import net.kyori.text.serializer.ComponentSerializers;
-import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.Optional;
-
 /**
  * Indicates an event that has a result attached to it.
  */
 public interface ResultedEvent<R extends ResultedEvent.Result> {
-    /**
+
-     * Returns the result associated with this event.
+  /**
-     * @return the result of this event
+   * Returns the result associated with this event.
-     */
+   *
-    R getResult();
+   * @return the result of this event
+   */
+  R getResult();
+
+  /**
+   * Sets the result of this event. The result must be non-null.
+   *
+   * @param result the new result
+   */
+  void setResult(R result);
+
+  /**
+   * Represents a result for an event.
+   */
+  interface Result {
 
     /**
-     * Sets the result of this event. The result must be non-null.
+     * Returns whether or not the event is allowed to proceed. Plugins may choose to skip denied
-     * @param result the new result
+     * events, and the proxy will respect the result of this method.
+     *
+     * @return whether or not the event is allowed to proceed
      */
-    void setResult(R result);
+    boolean isAllowed();
+  }
 
-    /**
+  /**
-     * Represents a result for an event.
+   * A generic "allowed/denied" result.
-     */
+   */
-    interface Result {
+  final class GenericResult implements Result {
-        /**
+
-         * Returns whether or not the event is allowed to proceed. Plugins may choose to skip denied events, and the
+    private static final GenericResult ALLOWED = new GenericResult(true);
-         * proxy will respect the result of this method.
+    private static final GenericResult DENIED = new GenericResult(false);
-         * @return whether or not the event is allowed to proceed
+
-         */
+    private final boolean status;
-        boolean isAllowed();
+
+    private GenericResult(boolean b) {
+      this.status = b;
     }
 
-    /**
+    @Override
-     * A generic "allowed/denied" result.
+    public boolean isAllowed() {
-     */
+      return status;
-    final class GenericResult implements Result {
-        private static final GenericResult ALLOWED = new GenericResult(true);
-        private static final GenericResult DENIED = new GenericResult(false);
-
-        private final boolean status;
-
-        private GenericResult(boolean b) {
-            this.status = b;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return status;
-        }
-
-        @Override
-        public String toString() {
-            return status ? "allowed" : "denied";
-        }
-
-        public static GenericResult allowed() {
-            return ALLOWED;
-        }
-
-        public static GenericResult denied() {
-            return DENIED;
-        }
     }
 
-    /**
+    @Override
-     * Represents an "allowed/denied" result with a reason allowed for denial.
+    public String toString() {
-     */
+      return status ? "allowed" : "denied";
-    final class ComponentResult implements Result {
-        private static final ComponentResult ALLOWED = new ComponentResult(true, null);
-
-        private final boolean status;
-        private final @Nullable Component reason;
-
-        protected ComponentResult(boolean status, @Nullable Component reason) {
-            this.status = status;
-            this.reason = reason;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return status;
-        }
-
-        public Optional<Component> getReason() {
-            return Optional.ofNullable(reason);
-        }
-
-        @Override
-        public String toString() {
-            if (status) {
-                return "allowed";
-            }
-            if (reason != null) {
-                return "denied: " + ComponentSerializers.PLAIN.serialize(reason);
-            }
-            return "denied";
-        }
-
-        public static ComponentResult allowed() {
-            return ALLOWED;
-        }
-
-        public static ComponentResult denied(Component reason) {
-            Preconditions.checkNotNull(reason, "reason");
-            return new ComponentResult(false, reason);
-        }
     }
+
+    public static GenericResult allowed() {
+      return ALLOWED;
+    }
+
+    public static GenericResult denied() {
+      return DENIED;
+    }
+  }
+
+  /**
+   * Represents an "allowed/denied" result with a reason allowed for denial.
+   */
+  final class ComponentResult implements Result {
+
+    private static final ComponentResult ALLOWED = new ComponentResult(true, null);
+
+    private final boolean status;
+    private final @Nullable Component reason;
+
+    protected ComponentResult(boolean status, @Nullable Component reason) {
+      this.status = status;
+      this.reason = reason;
+    }
+
+    @Override
+    public boolean isAllowed() {
+      return status;
+    }
+
+    public Optional<Component> getReason() {
+      return Optional.ofNullable(reason);
+    }
+
+    @Override
+    public String toString() {
+      if (status) {
+        return "allowed";
+      }
+      if (reason != null) {
+        return "denied: " + ComponentSerializers.PLAIN.serialize(reason);
+      }
+      return "denied";
+    }
+
+    public static ComponentResult allowed() {
+      return ALLOWED;
+    }
+
+    public static ComponentResult denied(Component reason) {
+      Preconditions.checkNotNull(reason, "reason");
+      return new ComponentResult(false, reason);
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/Subscribe.java

@@ -12,11 +12,11 @@ import java.lang.annotation.Target;
 @Target(ElementType.METHOD)
 public @interface Subscribe {
 
-    /**
+  /**
-     * The order events will be posted to this listener.
+   * The order events will be posted to this listener.
-     *
+   *
-     * @return the order
+   * @return the order
-     */
+   */
-    PostOrder order() default PostOrder.NORMAL;
+  PostOrder order() default PostOrder.NORMAL;
 
 }

api/src/main/java/com/velocitypowered/api/event/connection/ConnectionHandshakeEvent.java

@@ -7,20 +7,21 @@ import com.velocitypowered.api.proxy.InboundConnection;
  * This event is fired when a handshake is established between a client and Velocity.
  */
 public final class ConnectionHandshakeEvent {
-    private final InboundConnection connection;
 
-    public ConnectionHandshakeEvent(InboundConnection connection) {
+  private final InboundConnection connection;
-        this.connection = Preconditions.checkNotNull(connection, "connection");
-    }
 
-    public InboundConnection getConnection() {
+  public ConnectionHandshakeEvent(InboundConnection connection) {
-        return connection;
+    this.connection = Preconditions.checkNotNull(connection, "connection");
-    }
+  }
 
-    @Override
+  public InboundConnection getConnection() {
-    public String toString() {
+    return connection;
-        return "ConnectionHandshakeEvent{" +
+  }
-                "connection=" + connection +
+
-                '}';
+  @Override
-    }
+  public String toString() {
+    return "ConnectionHandshakeEvent{" +
+        "connection=" + connection +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/connection/DisconnectEvent.java

@@ -4,24 +4,25 @@ import com.google.common.base.Preconditions;
 import com.velocitypowered.api.proxy.Player;
 
 /**
- * This event is fired when a player disconnects from the proxy. Operations on the provided player, aside from basic
+ * This event is fired when a player disconnects from the proxy. Operations on the provided player,
- * data retrieval operations, may behave in undefined ways.
+ * aside from basic data retrieval operations, may behave in undefined ways.
  */
 public final class DisconnectEvent {
-    private final Player player;
 
-    public DisconnectEvent(Player player) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
-    }
 
-    public Player getPlayer() {
+  public DisconnectEvent(Player player) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+  }
 
-    @Override
+  public Player getPlayer() {
-    public String toString() {
+    return player;
-        return "DisconnectEvent{" +
+  }
-                "player=" + player +
+
-                '}';
+  @Override
-    }
+  public String toString() {
+    return "DisconnectEvent{" +
+        "player=" + player +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java

@@ -5,36 +5,38 @@ import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.proxy.Player;
 
 /**
- * This event is fired once the player has been authenticated but before they connect to a server on the proxy.
+ * This event is fired once the player has been authenticated but before they connect to a server on
+ * the proxy.
  */
 public final class LoginEvent implements ResultedEvent<ResultedEvent.ComponentResult> {
-    private final Player player;
-    private ComponentResult result;
 
-    public LoginEvent(Player player) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private ComponentResult result;
-        this.result = ComponentResult.allowed();
-    }
 
-    public Player getPlayer() {
+  public LoginEvent(Player player) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+    this.result = ComponentResult.allowed();
+  }
 
-    @Override
+  public Player getPlayer() {
-    public ComponentResult getResult() {
+    return player;
-        return result;
+  }
-    }
 
-    @Override
+  @Override
-    public void setResult(ComponentResult result) {
+  public ComponentResult getResult() {
-        this.result = Preconditions.checkNotNull(result, "result");
+    return result;
-    }
+  }
 
-    @Override
+  @Override
-    public String toString() {
+  public void setResult(ComponentResult result) {
-        return "LoginEvent{" +
+    this.result = Preconditions.checkNotNull(result, "result");
-                "player=" + player +
+  }
-                ", result=" + result +
+
-                '}';
+  @Override
-    }
+  public String toString() {
+    return "LoginEvent{" +
+        "player=" + player +
+        ", result=" + result +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/connection/PluginMessageEvent.java

@@ -7,99 +7,100 @@ import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.proxy.messages.ChannelIdentifier;
 import com.velocitypowered.api.proxy.messages.ChannelMessageSink;
 import com.velocitypowered.api.proxy.messages.ChannelMessageSource;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
 import java.util.Arrays;
 
 /**
- * This event is fired when a plugin message is sent to the proxy, either from a client ({@link com.velocitypowered.api.proxy.Player})
+ * This event is fired when a plugin message is sent to the proxy, either from a client ({@link
- * or a server ({@link com.velocitypowered.api.proxy.ServerConnection}).
+ * com.velocitypowered.api.proxy.Player}) or a server ({@link com.velocitypowered.api.proxy.ServerConnection}).
  */
 public final class PluginMessageEvent implements ResultedEvent<PluginMessageEvent.ForwardResult> {
-    private final ChannelMessageSource source;
-    private final ChannelMessageSink target;
-    private final ChannelIdentifier identifier;
-    private final byte[] data;
-    private ForwardResult result;
 
-    public PluginMessageEvent(ChannelMessageSource source, ChannelMessageSink target, ChannelIdentifier identifier, byte[] data) {
+  private final ChannelMessageSource source;
-        this.source = Preconditions.checkNotNull(source, "source");
+  private final ChannelMessageSink target;
-        this.target = Preconditions.checkNotNull(target, "target");
+  private final ChannelIdentifier identifier;
-        this.identifier = Preconditions.checkNotNull(identifier, "identifier");
+  private final byte[] data;
-        this.data = Preconditions.checkNotNull(data, "data");
+  private ForwardResult result;
-        this.result = ForwardResult.forward();
+
+  public PluginMessageEvent(ChannelMessageSource source, ChannelMessageSink target,
+      ChannelIdentifier identifier, byte[] data) {
+    this.source = Preconditions.checkNotNull(source, "source");
+    this.target = Preconditions.checkNotNull(target, "target");
+    this.identifier = Preconditions.checkNotNull(identifier, "identifier");
+    this.data = Preconditions.checkNotNull(data, "data");
+    this.result = ForwardResult.forward();
+  }
+
+  @Override
+  public ForwardResult getResult() {
+    return result;
+  }
+
+  @Override
+  public void setResult(ForwardResult result) {
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  public ChannelMessageSource getSource() {
+    return source;
+  }
+
+  public ChannelMessageSink getTarget() {
+    return target;
+  }
+
+  public ChannelIdentifier getIdentifier() {
+    return identifier;
+  }
+
+  public byte[] getData() {
+    return Arrays.copyOf(data, data.length);
+  }
+
+  public ByteArrayDataInput dataAsDataStream() {
+    return ByteStreams.newDataInput(data);
+  }
+
+  @Override
+  public String toString() {
+    return "PluginMessageEvent{" +
+        "source=" + source +
+        ", target=" + target +
+        ", identifier=" + identifier +
+        ", data=" + Arrays.toString(data) +
+        ", result=" + result +
+        '}';
+  }
+
+  /**
+   * A result determining whether or not to forward this message on.
+   */
+  public static final class ForwardResult implements ResultedEvent.Result {
+
+    private static final ForwardResult ALLOWED = new ForwardResult(true);
+    private static final ForwardResult DENIED = new ForwardResult(false);
+
+    private final boolean status;
+
+    private ForwardResult(boolean b) {
+      this.status = b;
     }
 
     @Override
-    public ForwardResult getResult() {
+    public boolean isAllowed() {
-        return result;
+      return status;
-    }
-
-    @Override
-    public void setResult(ForwardResult result) {
-        this.result = Preconditions.checkNotNull(result, "result");
-    }
-
-    public ChannelMessageSource getSource() {
-        return source;
-    }
-
-    public ChannelMessageSink getTarget() {
-        return target;
-    }
-
-    public ChannelIdentifier getIdentifier() {
-        return identifier;
-    }
-
-    public byte[] getData() {
-        return Arrays.copyOf(data, data.length);
-    }
-
-    public ByteArrayDataInput dataAsDataStream() {
-        return ByteStreams.newDataInput(data);
     }
 
     @Override
     public String toString() {
-        return "PluginMessageEvent{" +
+      return status ? "forward to sink" : "handled message at proxy";
-                "source=" + source +
-                ", target=" + target +
-                ", identifier=" + identifier +
-                ", data=" + Arrays.toString(data) +
-                ", result=" + result +
-                '}';
     }
 
-    /**
+    public static ForwardResult forward() {
-     * A result determining whether or not to forward this message on.
+      return ALLOWED;
-     */
-    public static final class ForwardResult implements ResultedEvent.Result {
-        private static final ForwardResult ALLOWED = new ForwardResult(true);
-        private static final ForwardResult DENIED = new ForwardResult(false);
-
-        private final boolean status;
-
-        private ForwardResult(boolean b) {
-            this.status = b;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return status;
-        }
-
-        @Override
-        public String toString() {
-            return status ? "forward to sink" : "handled message at proxy";
-        }
-
-        public static ForwardResult forward() {
-            return ALLOWED;
-        }
-
-        public static ForwardResult handled() {
-            return DENIED;
-        }
     }
+
+    public static ForwardResult handled() {
+      return DENIED;
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/connection/PostLoginEvent.java

@@ -4,25 +4,25 @@ import com.google.common.base.Preconditions;
 import com.velocitypowered.api.proxy.Player;
 
 /**
- * This event is fired once the player has been successfully authenticated and
+ * This event is fired once the player has been successfully authenticated and fully initialized and
- * fully initialized and player will be connected to server after this event
+ * player will be connected to server after this event
  */
 public final class PostLoginEvent {
 
-    private final Player player;
+  private final Player player;
 
-    public PostLoginEvent(Player player) {
+  public PostLoginEvent(Player player) {
-        this.player = Preconditions.checkNotNull(player, "player");
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+  }
 
-    public Player getPlayer() {
+  public Player getPlayer() {
-        return player;
+    return player;
-    }
+  }
 
-    @Override
+  @Override
-    public String toString() {
+  public String toString() {
-        return "PostLoginEvent{"
+    return "PostLoginEvent{"
-                + "player=" + player
+        + "player=" + player
-                + '}';
+        + '}';
-    }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/connection/PreLoginEvent.java

@@ -3,147 +3,153 @@ package com.velocitypowered.api.event.connection;
 import com.google.common.base.Preconditions;
 import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.proxy.InboundConnection;
+import java.util.Optional;
 import net.kyori.text.Component;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.Optional;
-
 /**
- * This event is fired when a player has initiated a connection with the proxy but before the proxy authenticates the
+ * This event is fired when a player has initiated a connection with the proxy but before the proxy
- * player with Mojang or before the player's proxy connection is fully established (for offline mode).
+ * authenticates the player with Mojang or before the player's proxy connection is fully established
+ * (for offline mode).
  */
 public final class PreLoginEvent implements ResultedEvent<PreLoginEvent.PreLoginComponentResult> {
-    private final InboundConnection connection;
-    private final String username;
-    private PreLoginComponentResult result;
 
-    public PreLoginEvent(InboundConnection connection, String username) {
+  private final InboundConnection connection;
-        this.connection = Preconditions.checkNotNull(connection, "connection");
+  private final String username;
-        this.username = Preconditions.checkNotNull(username, "username");
+  private PreLoginComponentResult result;
-        this.result = PreLoginComponentResult.allowed();
-    }
 
-    public InboundConnection getConnection() {
+  public PreLoginEvent(InboundConnection connection, String username) {
-        return connection;
+    this.connection = Preconditions.checkNotNull(connection, "connection");
-    }
+    this.username = Preconditions.checkNotNull(username, "username");
+    this.result = PreLoginComponentResult.allowed();
+  }
 
-    public String getUsername() {
+  public InboundConnection getConnection() {
-        return username;
+    return connection;
+  }
+
+  public String getUsername() {
+    return username;
+  }
+
+  @Override
+  public PreLoginComponentResult getResult() {
+    return result;
+  }
+
+  @Override
+  public void setResult(@NonNull PreLoginComponentResult result) {
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  @Override
+  public String toString() {
+    return "PreLoginEvent{" +
+        "connection=" + connection +
+        ", username='" + username + '\'' +
+        ", result=" + result +
+        '}';
+  }
+
+  /**
+   * Represents an "allowed/allowed with forced online\offline mode/denied" result with a reason
+   * allowed for denial.
+   */
+  public static final class PreLoginComponentResult implements ResultedEvent.Result {
+
+    private static final PreLoginComponentResult ALLOWED = new PreLoginComponentResult(
+        Result.ALLOWED, null);
+    private static final PreLoginComponentResult FORCE_ONLINEMODE = new PreLoginComponentResult(
+        Result.FORCE_ONLINE, null);
+    private static final PreLoginComponentResult FORCE_OFFLINEMODE = new PreLoginComponentResult(
+        Result.FORCE_OFFLINE, null);
+
+    private final Result result;
+    private final @Nullable Component reason;
+
+    private PreLoginComponentResult(Result result, @Nullable Component reason) {
+      this.result = result;
+      this.reason = reason;
     }
 
     @Override
-    public PreLoginComponentResult getResult() {
+    public boolean isAllowed() {
-        return result;
+      return result != Result.DISALLOWED;
     }
 
-    @Override
+    public Optional<Component> getReason() {
-    public void setResult(@NonNull PreLoginComponentResult result) {
+      return Optional.ofNullable(reason);
-        this.result = Preconditions.checkNotNull(result, "result");
+    }
+
+    public boolean isOnlineModeAllowed() {
+      return result == Result.FORCE_ONLINE;
+    }
+
+    public boolean isForceOfflineMode() {
+      return result == Result.FORCE_OFFLINE;
     }
 
     @Override
     public String toString() {
-        return "PreLoginEvent{" +
+      switch (result) {
-                "connection=" + connection +
+        case ALLOWED:
-                ", username='" + username + '\'' +
+          return "allowed";
-                ", result=" + result +
+        case FORCE_OFFLINE:
-                '}';
+          return "allowed with force offline mode";
+        case FORCE_ONLINE:
+          return "allowed with online mode";
+        default:
+          return "denied";
+      }
     }
 
     /**
-     * Represents an "allowed/allowed with forced online\offline mode/denied" result with a reason allowed for denial.
+     * Returns a result indicating the connection will be allowed through the proxy.
+     *
+     * @return the allowed result
      */
-    public static final class PreLoginComponentResult implements ResultedEvent.Result {
+    public static PreLoginComponentResult allowed() {
-
+      return ALLOWED;
-        private static final PreLoginComponentResult ALLOWED = new PreLoginComponentResult(Result.ALLOWED, null);
-        private static final PreLoginComponentResult FORCE_ONLINEMODE = new PreLoginComponentResult(Result.FORCE_ONLINE, null);
-        private static final PreLoginComponentResult FORCE_OFFLINEMODE = new PreLoginComponentResult(Result.FORCE_OFFLINE, null);
-
-        private final Result result;
-        private final @Nullable Component reason;
-
-        private PreLoginComponentResult(Result result, @Nullable Component reason) {
-            this.result = result;
-            this.reason = reason;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return result != Result.DISALLOWED;
-        }
-
-        public Optional<Component> getReason() {
-            return Optional.ofNullable(reason);
-        }
-
-        public boolean isOnlineModeAllowed() {
-            return result == Result.FORCE_ONLINE;
-        }
-
-        public boolean isForceOfflineMode() {
-            return result == Result.FORCE_OFFLINE;
-        }
-
-        @Override
-        public String toString() {
-            switch (result) {
-                case ALLOWED:
-                    return "allowed";
-                case FORCE_OFFLINE:
-                    return "allowed with force offline mode";
-                case FORCE_ONLINE:
-                    return "allowed with online mode";
-                default:
-                    return "denied";
-            }
-        }
-
-        /**
-         * Returns a result indicating the connection will be allowed through
-         * the proxy.
-         * @return the allowed result
-         */
-        public static PreLoginComponentResult allowed() {
-            return ALLOWED;
-        }
-
-        /**
-         * Returns a result indicating the connection will be allowed through
-         * the proxy, but the connection will be forced to use online mode
-         * provided that the proxy is in offline mode. This acts similarly to
-         * {@link #allowed()} on an online-mode proxy.
-         * @return the result
-         */
-        public static PreLoginComponentResult forceOnlineMode() {
-            return FORCE_ONLINEMODE;
-        }
-
-        /**
-         * Returns a result indicating the connection will be allowed through
-         * the proxy, but the connection will be forced to use offline mode even
-         * when proxy running in online mode
-         * @return the result
-         */
-        public static PreLoginComponentResult forceOfflineMode() {
-            return FORCE_OFFLINEMODE;
-        }
-
-        /**
-         * Denies the login with the specified reason.
-         * @param reason the reason for disallowing the connection
-         * @return a new result
-         */
-        public static PreLoginComponentResult denied(Component reason) {
-            Preconditions.checkNotNull(reason, "reason");
-            return new PreLoginComponentResult(Result.DISALLOWED, reason);
-        }
-
-        private enum Result {
-            ALLOWED,
-            FORCE_ONLINE,
-            FORCE_OFFLINE,
-            DISALLOWED
-        }
     }
+
+    /**
+     * Returns a result indicating the connection will be allowed through the proxy, but the
+     * connection will be forced to use online mode provided that the proxy is in offline mode. This
+     * acts similarly to {@link #allowed()} on an online-mode proxy.
+     *
+     * @return the result
+     */
+    public static PreLoginComponentResult forceOnlineMode() {
+      return FORCE_ONLINEMODE;
+    }
+
+    /**
+     * Returns a result indicating the connection will be allowed through the proxy, but the
+     * connection will be forced to use offline mode even when proxy running in online mode
+     *
+     * @return the result
+     */
+    public static PreLoginComponentResult forceOfflineMode() {
+      return FORCE_OFFLINEMODE;
+    }
+
+    /**
+     * Denies the login with the specified reason.
+     *
+     * @param reason the reason for disallowing the connection
+     * @return a new result
+     */
+    public static PreLoginComponentResult denied(Component reason) {
+      Preconditions.checkNotNull(reason, "reason");
+      return new PreLoginComponentResult(Result.DISALLOWED, reason);
+    }
+
+    private enum Result {
+      ALLOWED,
+      FORCE_ONLINE,
+      FORCE_OFFLINE,
+      DISALLOWED
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/permission/PermissionsSetupEvent.java

@@ -12,52 +12,52 @@ import org.checkerframework.checker.nullness.qual.Nullable;
  * <p>This event is only called once per subject, on initialisation.</p>
  */
 public final class PermissionsSetupEvent {
-    private final PermissionSubject subject;
-    private final PermissionProvider defaultProvider;
-    private PermissionProvider provider;
 
-    public PermissionsSetupEvent(PermissionSubject subject, PermissionProvider provider) {
+  private final PermissionSubject subject;
-        this.subject = Preconditions.checkNotNull(subject, "subject");
+  private final PermissionProvider defaultProvider;
-        this.provider = this.defaultProvider = Preconditions.checkNotNull(provider, "provider");
+  private PermissionProvider provider;
-    }
 
-    public PermissionSubject getSubject() {
+  public PermissionsSetupEvent(PermissionSubject subject, PermissionProvider provider) {
-        return this.subject;
+    this.subject = Preconditions.checkNotNull(subject, "subject");
-    }
+    this.provider = this.defaultProvider = Preconditions.checkNotNull(provider, "provider");
+  }
 
-    /**
+  public PermissionSubject getSubject() {
-     * Uses the provider function to obtain a {@link PermissionFunction} for
+    return this.subject;
-     * the subject.
+  }
-     *
-     * @param subject the subject
-     * @return the obtained permission function
-     */
-    public PermissionFunction createFunction(PermissionSubject subject) {
-        return this.provider.createFunction(subject);
-    }
 
-    public PermissionProvider getProvider() {
+  /**
-        return this.provider;
+   * Uses the provider function to obtain a {@link PermissionFunction} for the subject.
-    }
+   *
+   * @param subject the subject
+   * @return the obtained permission function
+   */
+  public PermissionFunction createFunction(PermissionSubject subject) {
+    return this.provider.createFunction(subject);
+  }
 
-    /**
+  public PermissionProvider getProvider() {
-     * Sets the {@link PermissionFunction} that should be used for the subject.
+    return this.provider;
-     *
+  }
-     * <p>Specifying <code>null</code> will reset the provider to the default
-     * instance given when the event was posted.</p>
-     *
-     * @param provider the provider
-     */
-    public void setProvider(@Nullable PermissionProvider provider) {
-        this.provider = provider == null ? this.defaultProvider : provider;
-    }
 
-    @Override
+  /**
-    public String toString() {
+   * Sets the {@link PermissionFunction} that should be used for the subject.
-        return "PermissionsSetupEvent{" +
+   *
-                "subject=" + subject +
+   * <p>Specifying <code>null</code> will reset the provider to the default
-                ", defaultProvider=" + defaultProvider +
+   * instance given when the event was posted.</p>
-                ", provider=" + provider +
+   *
-                '}';
+   * @param provider the provider
-    }
+   */
+  public void setProvider(@Nullable PermissionProvider provider) {
+    this.provider = provider == null ? this.defaultProvider : provider;
+  }
+
+  @Override
+  public String toString() {
+    return "PermissionsSetupEvent{" +
+        "subject=" + subject +
+        ", defaultProvider=" + defaultProvider +
+        ", provider=" + provider +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/player/GameProfileRequestEvent.java

@@ -6,65 +6,73 @@ import com.velocitypowered.api.util.GameProfile;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
- * This event is fired after the {@link com.velocitypowered.api.event.connection.PreLoginEvent} in order to set up the
+ * This event is fired after the {@link com.velocitypowered.api.event.connection.PreLoginEvent} in
- * game profile for the user. This can be used to configure a custom profile for a user, i.e. skin replacement.
+ * order to set up the game profile for the user. This can be used to configure a custom profile for
+ * a user, i.e. skin replacement.
  */
 public final class GameProfileRequestEvent {
-    private final String username;
-    private final InboundConnection connection;
-    private final GameProfile originalProfile;
-    private final boolean onlineMode;
-    private @Nullable GameProfile gameProfile;
 
-    public GameProfileRequestEvent(InboundConnection connection, GameProfile originalProfile, boolean onlineMode) {
+  private final String username;
-        this.connection = Preconditions.checkNotNull(connection, "connection");
+  private final InboundConnection connection;
-        this.originalProfile = Preconditions.checkNotNull(originalProfile, "originalProfile");
+  private final GameProfile originalProfile;
-        this.username = originalProfile.getName();
+  private final boolean onlineMode;
-        this.onlineMode = onlineMode;
+  private @Nullable GameProfile gameProfile;
-    }
 
-    public InboundConnection getConnection() {
+  public GameProfileRequestEvent(InboundConnection connection, GameProfile originalProfile,
-        return connection;
+      boolean onlineMode) {
-    }
+    this.connection = Preconditions.checkNotNull(connection, "connection");
+    this.originalProfile = Preconditions.checkNotNull(originalProfile, "originalProfile");
+    this.username = originalProfile.getName();
+    this.onlineMode = onlineMode;
+  }
 
-    public String getUsername() {
+  public InboundConnection getConnection() {
-        return username;
+    return connection;
-    }
+  }
 
-    public GameProfile getOriginalProfile() {
+  public String getUsername() {
-        return originalProfile;
+    return username;
-    }
+  }
 
-    public boolean isOnlineMode() {
+  public GameProfile getOriginalProfile() {
-        return onlineMode;
+    return originalProfile;
-    }
+  }
 
-    /**
+  public boolean isOnlineMode() {
-     * Returns the game profile that will be used to initialize the connection with. Should no profile be currently
+    return onlineMode;
-     * specified, the one generated by the proxy (for offline mode) or retrieved from the Mojang session servers (for
+  }
-     * online mode) will be returned instead.
-     * @return the user's {@link GameProfile}
-     */
-    public GameProfile getGameProfile() {
-        return gameProfile == null ? originalProfile : gameProfile;
-    }
 
-    /**
+  /**
-     * Sets the game profile to use for this connection. It is invalid to use this method on an online-mode connection.
+   * Returns the game profile that will be used to initialize the connection with. Should no profile
-     * @param gameProfile the profile to use for the connection, {@code null} uses the original profile
+   * be currently specified, the one generated by the proxy (for offline mode) or retrieved from the
-     */
+   * Mojang session servers (for online mode) will be returned instead.
-    public void setGameProfile(@Nullable GameProfile gameProfile) {
+   *
-        Preconditions.checkState(!onlineMode, "Connection is in online mode, profiles can not be faked");
+   * @return the user's {@link GameProfile}
-        this.gameProfile = gameProfile;
+   */
-    }
+  public GameProfile getGameProfile() {
+    return gameProfile == null ? originalProfile : gameProfile;
+  }
 
-    @Override
+  /**
-    public String toString() {
+   * Sets the game profile to use for this connection. It is invalid to use this method on an
-        return "GameProfileRequestEvent{"+
+   * online-mode connection.
-                    "username=" + username +
+   *
-                    ", gameProfile=" + gameProfile +
+   * @param gameProfile the profile to use for the connection, {@code null} uses the original
-                    "}";
+   * profile
-    }
+   */
+  public void setGameProfile(@Nullable GameProfile gameProfile) {
+    Preconditions
+        .checkState(!onlineMode, "Connection is in online mode, profiles can not be faked");
+    this.gameProfile = gameProfile;
+  }
+
+  @Override
+  public String toString() {
+    return "GameProfileRequestEvent{" +
+        "username=" + username +
+        ", gameProfile=" + gameProfile +
+        "}";
+  }
 
 
 }

api/src/main/java/com/velocitypowered/api/event/player/KickedFromServerEvent.java

@@ -8,111 +8,120 @@ import net.kyori.text.Component;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 /**
- * Fired when a player is kicked from a server. You may either allow Velocity to kick the player (with an optional reason
+ * Fired when a player is kicked from a server. You may either allow Velocity to kick the player
- * override) or redirect the player to a separate server.
+ * (with an optional reason override) or redirect the player to a separate server.
  */
-public final class KickedFromServerEvent implements ResultedEvent<KickedFromServerEvent.ServerKickResult> {
+public final class KickedFromServerEvent implements
-    private final Player player;
+    ResultedEvent<KickedFromServerEvent.ServerKickResult> {
+
+  private final Player player;
+  private final RegisteredServer server;
+  private final Component originalReason;
+  private final boolean duringLogin;
+  private ServerKickResult result;
+
+  public KickedFromServerEvent(Player player, RegisteredServer server, Component originalReason,
+      boolean duringLogin, Component fancyReason) {
+    this.player = Preconditions.checkNotNull(player, "player");
+    this.server = Preconditions.checkNotNull(server, "server");
+    this.originalReason = Preconditions.checkNotNull(originalReason, "originalReason");
+    this.duringLogin = duringLogin;
+    this.result = new DisconnectPlayer(fancyReason);
+  }
+
+  @Override
+  public ServerKickResult getResult() {
+    return result;
+  }
+
+  @Override
+  public void setResult(@NonNull ServerKickResult result) {
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  public Player getPlayer() {
+    return player;
+  }
+
+  public RegisteredServer getServer() {
+    return server;
+  }
+
+  public Component getOriginalReason() {
+    return originalReason;
+  }
+
+  public boolean kickedDuringLogin() {
+    return duringLogin;
+  }
+
+  /**
+   * Represents the base interface for {@link KickedFromServerEvent} results.
+   */
+  public interface ServerKickResult extends ResultedEvent.Result {
+
+  }
+
+  /**
+   * Tells the proxy to disconnect the player with the specified reason.
+   */
+  public static final class DisconnectPlayer implements ServerKickResult {
+
+    private final Component component;
+
+    private DisconnectPlayer(Component component) {
+      this.component = Preconditions.checkNotNull(component, "component");
+    }
+
+    @Override
+    public boolean isAllowed() {
+      return true;
+    }
+
+    public Component getReason() {
+      return component;
+    }
+
+    /**
+     * Creates a new {@link DisconnectPlayer} with the specified reason.
+     *
+     * @param reason the reason to use when disconnecting the player
+     * @return the disconnect result
+     */
+    public static DisconnectPlayer create(Component reason) {
+      return new DisconnectPlayer(reason);
+    }
+  }
+
+  /**
+   * Tells the proxy to redirect the player to another server. No messages will be sent from the
+   * proxy when this result is used.
+   */
+  public static final class RedirectPlayer implements ServerKickResult {
+
     private final RegisteredServer server;
-    private final Component originalReason;
-    private final boolean duringLogin;
-    private ServerKickResult result;
 
-    public KickedFromServerEvent(Player player, RegisteredServer server, Component originalReason, boolean duringLogin, Component fancyReason) {
+    private RedirectPlayer(RegisteredServer server) {
-        this.player = Preconditions.checkNotNull(player, "player");
+      this.server = Preconditions.checkNotNull(server, "server");
-        this.server = Preconditions.checkNotNull(server, "server");
-        this.originalReason = Preconditions.checkNotNull(originalReason, "originalReason");
-        this.duringLogin = duringLogin;
-        this.result = new DisconnectPlayer(fancyReason);
     }
 
     @Override
-    public ServerKickResult getResult() {
+    public boolean isAllowed() {
-        return result;
+      return false;
-    }
-
-    @Override
-    public void setResult(@NonNull ServerKickResult result) {
-        this.result = Preconditions.checkNotNull(result, "result");
-    }
-
-    public Player getPlayer() {
-        return player;
     }
 
     public RegisteredServer getServer() {
-        return server;
+      return server;
-    }
-
-    public Component getOriginalReason() {
-        return originalReason;
-    }
-
-    public boolean kickedDuringLogin() {
-        return duringLogin;
     }
 
     /**
-     * Represents the base interface for {@link KickedFromServerEvent} results.
+     * Creates a new redirect result to forward the player to the specified {@code server}.
+     *
+     * @param server the server to send the player to
+     * @return the redirect result
      */
-    public interface ServerKickResult extends ResultedEvent.Result {}
+    public static RedirectPlayer create(RegisteredServer server) {
-
+      return new RedirectPlayer(server);
-    /**
-     * Tells the proxy to disconnect the player with the specified reason.
-     */
-    public static final class DisconnectPlayer implements ServerKickResult {
-        private final Component component;
-
-        private DisconnectPlayer(Component component) {
-            this.component = Preconditions.checkNotNull(component, "component");
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return true;
-        }
-
-        public Component getReason() {
-            return component;
-        }
-
-        /**
-         * Creates a new {@link DisconnectPlayer} with the specified reason.
-         * @param reason the reason to use when disconnecting the player
-         * @return the disconnect result
-         */
-        public static DisconnectPlayer create(Component reason) {
-            return new DisconnectPlayer(reason);
-        }
-    }
-
-    /**
-     * Tells the proxy to redirect the player to another server. No messages will be sent from the proxy
-     * when this result is used.
-     */
-    public static final class RedirectPlayer implements ServerKickResult {
-        private final RegisteredServer server;
-
-        private RedirectPlayer(RegisteredServer server) {
-            this.server = Preconditions.checkNotNull(server, "server");
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return false;
-        }
-
-        public RegisteredServer getServer() {
-            return server;
-        }
-
-        /**
-         * Creates a new redirect result to forward the player to the specified {@code server}.
-         * @param server the server to send the player to
-         * @return the redirect result
-         */
-        public static RedirectPlayer create(RegisteredServer server) {
-            return new RedirectPlayer(server);
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/player/PlayerChatEvent.java

@@ -3,95 +3,96 @@ package com.velocitypowered.api.event.player;
 import com.google.common.base.Preconditions;
 import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.proxy.Player;
+import java.util.Optional;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.Optional;
-
 /**
  * This event is fired when a player types in a chat message.
  */
 public final class PlayerChatEvent implements ResultedEvent<PlayerChatEvent.ChatResult> {
-    private final Player player;
-    private final String message;
-    private ChatResult result;
 
-    public PlayerChatEvent(Player player, String message) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private final String message;
-        this.message = Preconditions.checkNotNull(message, "message");
+  private ChatResult result;
-        this.result = ChatResult.allowed();
-    }
 
-    public Player getPlayer() {
+  public PlayerChatEvent(Player player, String message) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+    this.message = Preconditions.checkNotNull(message, "message");
+    this.result = ChatResult.allowed();
+  }
 
-    public String getMessage() {
+  public Player getPlayer() {
-        return message;
+    return player;
+  }
+
+  public String getMessage() {
+    return message;
+  }
+
+  @Override
+  public ChatResult getResult() {
+    return result;
+  }
+
+  @Override
+  public void setResult(ChatResult result) {
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  @Override
+  public String toString() {
+    return "PlayerChatEvent{" +
+        "player=" + player +
+        ", message=" + message +
+        ", result=" + result +
+        '}';
+  }
+
+  /**
+   * Represents the result of the {@link PlayerChatEvent}.
+   */
+  public static final class ChatResult implements ResultedEvent.Result {
+
+    private static final ChatResult ALLOWED = new ChatResult(true, null);
+    private static final ChatResult DENIED = new ChatResult(false, null);
+
+    // The server can not accept formatted text from clients!
+    private @Nullable String message;
+    private final boolean status;
+
+    protected ChatResult(boolean status, @Nullable String message) {
+      this.status = status;
+      this.message = message;
     }
 
     @Override
-    public ChatResult getResult() {
+    public boolean isAllowed() {
-        return result;
+      return status;
-    }
-
-    @Override
-    public void setResult(ChatResult result) {
-        this.result = Preconditions.checkNotNull(result, "result");
     }
 
     @Override
     public String toString() {
-        return "PlayerChatEvent{" +
+      return status ? "allowed" : "denied";
-                "player=" + player +
-                ", message=" + message +
-                ", result=" + result +
-                '}';
     }
 
-    /**
+    public static ChatResult allowed() {
-     * Represents the result of the {@link PlayerChatEvent}.
+      return ALLOWED;
-     */
-    public static final class ChatResult implements ResultedEvent.Result {
-        private static final ChatResult ALLOWED = new ChatResult(true, null);
-        private static final ChatResult DENIED = new ChatResult(false, null);
-
-        // The server can not accept formatted text from clients!
-        private @Nullable String message;
-        private final boolean status;
-
-        protected ChatResult(boolean status, @Nullable String message) {
-            this.status = status;
-            this.message = message;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return status;
-        }
-
-        @Override
-        public String toString() {
-            return status ? "allowed" : "denied";
-        }
-
-        public static ChatResult allowed() {
-            return ALLOWED;
-        }
-
-        public static ChatResult denied() {
-            return DENIED;
-        }
-
-        public Optional<String> getMessage() {
-            return Optional.ofNullable(message);
-        }
-
-        public static ChatResult message(@NonNull String message) {
-            Preconditions.checkNotNull(message, "message");
-            return new ChatResult(true, message);
-        }
     }
 
+    public static ChatResult denied() {
+      return DENIED;
+    }
+
+    public Optional<String> getMessage() {
+      return Optional.ofNullable(message);
+    }
+
+    public static ChatResult message(@NonNull String message) {
+      Preconditions.checkNotNull(message, "message");
+      return new ChatResult(true, message);
+    }
+  }
+
 
 }

api/src/main/java/com/velocitypowered/api/event/player/PlayerModInfoEvent.java

@@ -8,19 +8,20 @@ import com.velocitypowered.api.util.ModInfo;
  * This event is fired when the players ModInfo is changed.
  */
 public final class PlayerModInfoEvent {
-    private final Player player;
-    private final ModInfo modInfo;
 
-    public PlayerModInfoEvent(Player player, ModInfo modInfo) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private final ModInfo modInfo;
-        this.modInfo = Preconditions.checkNotNull(modInfo, "modInfo");
-    }
 
-    public Player getPlayer() {
+  public PlayerModInfoEvent(Player player, ModInfo modInfo) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+    this.modInfo = Preconditions.checkNotNull(modInfo, "modInfo");
+  }
 
-    public ModInfo getModInfo() {
+  public Player getPlayer() {
-        return modInfo;
+    return player;
-    }
+  }
+
+  public ModInfo getModInfo() {
+    return modInfo;
+  }
 }

api/src/main/java/com/velocitypowered/api/event/player/PlayerSettingsChangedEvent.java

@@ -5,19 +5,20 @@ import com.velocitypowered.api.proxy.Player;
 import com.velocitypowered.api.proxy.player.PlayerSettings;
 
 public final class PlayerSettingsChangedEvent {
-    private final Player player;
-    private final PlayerSettings playerSettings;
 
-    public PlayerSettingsChangedEvent(Player player, PlayerSettings playerSettings) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private final PlayerSettings playerSettings;
-        this.playerSettings = Preconditions.checkNotNull(playerSettings, "playerSettings");
-    }
 
-    public Player getPlayer() {
+  public PlayerSettingsChangedEvent(Player player, PlayerSettings playerSettings) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+    this.playerSettings = Preconditions.checkNotNull(playerSettings, "playerSettings");
+  }
 
-    public PlayerSettings getPlayerSettings() {
+  public Player getPlayer() {
-        return playerSettings;
+    return player;
-    }
+  }
+
+  public PlayerSettings getPlayerSettings() {
+    return playerSettings;
+  }
 }

api/src/main/java/com/velocitypowered/api/event/player/ServerConnectedEvent.java

@@ -5,31 +5,32 @@ import com.velocitypowered.api.proxy.Player;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 
 /**
- * This event is fired once the player has successfully connected to the target server and the connection to the previous
+ * This event is fired once the player has successfully connected to the target server and the
- * server has been de-established.
+ * connection to the previous server has been de-established.
  */
 public final class ServerConnectedEvent {
-    private final Player player;
-    private final RegisteredServer server;
 
-    public ServerConnectedEvent(Player player, RegisteredServer server) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private final RegisteredServer server;
-        this.server = Preconditions.checkNotNull(server, "server");
-    }
 
-    public Player getPlayer() {
+  public ServerConnectedEvent(Player player, RegisteredServer server) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
-    }
+    this.server = Preconditions.checkNotNull(server, "server");
+  }
 
-    public RegisteredServer getServer() {
+  public Player getPlayer() {
-        return server;
+    return player;
-    }
+  }
 
-    @Override
+  public RegisteredServer getServer() {
-    public String toString() {
+    return server;
-        return "ServerConnectedEvent{" +
+  }
-                "player=" + player +
+
-                ", server=" + server +
+  @Override
-                '}';
+  public String toString() {
-    }
+    return "ServerConnectedEvent{" +
+        "player=" + player +
+        ", server=" + server +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java

@@ -4,87 +4,89 @@ import com.google.common.base.Preconditions;
 import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.proxy.Player;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Optional;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * This event is fired before the player connects to a server.
  */
-public final class ServerPreConnectEvent implements ResultedEvent<ServerPreConnectEvent.ServerResult> {
+public final class ServerPreConnectEvent implements
-    private final Player player;
+    ResultedEvent<ServerPreConnectEvent.ServerResult> {
-    private final RegisteredServer originalServer;
-    private ServerResult result;
 
-    public ServerPreConnectEvent(Player player, RegisteredServer originalServer) {
+  private final Player player;
-        this.player = Preconditions.checkNotNull(player, "player");
+  private final RegisteredServer originalServer;
-        this.originalServer = Preconditions.checkNotNull(originalServer, "originalServer");
+  private ServerResult result;
-        this.result = ServerResult.allowed(originalServer);
-    }
 
-    public Player getPlayer() {
+  public ServerPreConnectEvent(Player player, RegisteredServer originalServer) {
-        return player;
+    this.player = Preconditions.checkNotNull(player, "player");
+    this.originalServer = Preconditions.checkNotNull(originalServer, "originalServer");
+    this.result = ServerResult.allowed(originalServer);
+  }
+
+  public Player getPlayer() {
+    return player;
+  }
+
+  @Override
+  public ServerResult getResult() {
+    return result;
+  }
+
+  @Override
+  public void setResult(ServerResult result) {
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  public RegisteredServer getOriginalServer() {
+    return originalServer;
+  }
+
+  @Override
+  public String toString() {
+    return "ServerPreConnectEvent{" +
+        "player=" + player +
+        ", originalServer=" + originalServer +
+        ", result=" + result +
+        '}';
+  }
+
+  /**
+   * Represents the result of the {@link ServerPreConnectEvent}.
+   */
+  public static class ServerResult implements ResultedEvent.Result {
+
+    private static final ServerResult DENIED = new ServerResult(null);
+
+    private final @Nullable RegisteredServer server;
+
+    private ServerResult(@Nullable RegisteredServer server) {
+      this.server = server;
     }
 
     @Override
-    public ServerResult getResult() {
+    public boolean isAllowed() {
-        return result;
+      return server != null;
     }
 
-    @Override
+    public Optional<RegisteredServer> getServer() {
-    public void setResult(ServerResult result) {
+      return Optional.ofNullable(server);
-        this.result = Preconditions.checkNotNull(result, "result");
-    }
-
-    public RegisteredServer getOriginalServer() {
-        return originalServer;
     }
 
     @Override
     public String toString() {
-        return "ServerPreConnectEvent{" +
+      if (server != null) {
-                "player=" + player +
+        return "allowed: connect to " + server.getServerInfo().getName();
-                ", originalServer=" + originalServer +
+      }
-                ", result=" + result +
+      return "denied";
-                '}';
     }
 
-    /**
+    public static ServerResult denied() {
-     * Represents the result of the {@link ServerPreConnectEvent}.
+      return DENIED;
-     */
-    public static class ServerResult implements ResultedEvent.Result {
-        private static final ServerResult DENIED = new ServerResult(null);
-
-        private final @Nullable RegisteredServer server;
-
-        private ServerResult(@Nullable RegisteredServer server) {
-            this.server = server;
-        }
-
-        @Override
-        public boolean isAllowed() {
-            return server != null;
-        }
-
-        public Optional<RegisteredServer> getServer() {
-            return Optional.ofNullable(server);
-        }
-
-        @Override
-        public String toString() {
-            if (server != null) {
-                return "allowed: connect to " + server.getServerInfo().getName();
-            }
-            return "denied";
-        }
-
-        public static ServerResult denied() {
-            return DENIED;
-        }
-
-        public static ServerResult allowed(RegisteredServer server) {
-            Preconditions.checkNotNull(server, "server");
-            return new ServerResult(server);
-        }
     }
+
+    public static ServerResult allowed(RegisteredServer server) {
+      Preconditions.checkNotNull(server, "server");
+      return new ServerResult(server);
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/event/proxy/ProxyInitializeEvent.java

@@ -1,11 +1,13 @@
 package com.velocitypowered.api.event.proxy;
 
 /**
- * This event is fired by the proxy after plugins have been loaded but before the proxy starts accepting connections.
+ * This event is fired by the proxy after plugins have been loaded but before the proxy starts
+ * accepting connections.
  */
 public final class ProxyInitializeEvent {
-    @Override
+
-    public String toString() {
+  @Override
-        return "ProxyInitializeEvent";
+  public String toString() {
-    }
+    return "ProxyInitializeEvent";
+  }
 }

api/src/main/java/com/velocitypowered/api/event/proxy/ProxyPingEvent.java

@@ -8,31 +8,32 @@ import com.velocitypowered.api.proxy.server.ServerPing;
  * This event is fired when a server list ping request is sent by a remote client.
  */
 public final class ProxyPingEvent {
-    private final InboundConnection connection;
-    private ServerPing ping;
 
-    public ProxyPingEvent(InboundConnection connection, ServerPing ping) {
+  private final InboundConnection connection;
-        this.connection = Preconditions.checkNotNull(connection, "connection");
+  private ServerPing ping;
-        this.ping = Preconditions.checkNotNull(ping, "ping");
-    }
 
-    public InboundConnection getConnection() {
+  public ProxyPingEvent(InboundConnection connection, ServerPing ping) {
-        return connection;
+    this.connection = Preconditions.checkNotNull(connection, "connection");
-    }
+    this.ping = Preconditions.checkNotNull(ping, "ping");
+  }
 
-    public ServerPing getPing() {
+  public InboundConnection getConnection() {
-        return ping;
+    return connection;
-    }
+  }
 
-    public void setPing(ServerPing ping) {
+  public ServerPing getPing() {
-        this.ping = Preconditions.checkNotNull(ping, "ping");
+    return ping;
-    }
+  }
 
-    @Override
+  public void setPing(ServerPing ping) {
-    public String toString() {
+    this.ping = Preconditions.checkNotNull(ping, "ping");
-        return "ProxyPingEvent{" +
+  }
-                "connection=" + connection +
+
-                ", ping=" + ping +
+  @Override
-                '}';
+  public String toString() {
-    }
+    return "ProxyPingEvent{" +
+        "connection=" + connection +
+        ", ping=" + ping +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/event/proxy/ProxyShutdownEvent.java

@@ -1,12 +1,13 @@
 package com.velocitypowered.api.event.proxy;
 
 /**
- * This event is fired by the proxy after the proxy has stopped accepting connections but before the proxy process
+ * This event is fired by the proxy after the proxy has stopped accepting connections but before the
- * exits.
+ * proxy process exits.
  */
 public final class ProxyShutdownEvent {
-    @Override
+
-    public String toString() {
+  @Override
-        return "ProxyShutdownEvent";
+  public String toString() {
-    }
+    return "ProxyShutdownEvent";
+  }
 }

api/src/main/java/com/velocitypowered/api/event/query/ProxyQueryEvent.java

@@ -2,82 +2,86 @@ package com.velocitypowered.api.event.query;
 
 import com.google.common.base.Preconditions;
 import com.velocitypowered.api.proxy.server.QueryResponse;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
 import java.net.InetAddress;
+import org.checkerframework.checker.nullness.qual.NonNull;
 
 /**
  * This event is fired if proxy is getting queried over GS4 Query protocol
  */
 public final class ProxyQueryEvent {
-    private final QueryType queryType;
-    private final InetAddress querierAddress;
-    private QueryResponse response;
 
-    public ProxyQueryEvent(QueryType queryType, InetAddress querierAddress, QueryResponse response) {
+  private final QueryType queryType;
-        this.queryType = Preconditions.checkNotNull(queryType, "queryType");
+  private final InetAddress querierAddress;
-        this.querierAddress = Preconditions.checkNotNull(querierAddress, "querierAddress");
+  private QueryResponse response;
-        this.response = Preconditions.checkNotNull(response, "response");
+
-    }
+  public ProxyQueryEvent(QueryType queryType, InetAddress querierAddress, QueryResponse response) {
+    this.queryType = Preconditions.checkNotNull(queryType, "queryType");
+    this.querierAddress = Preconditions.checkNotNull(querierAddress, "querierAddress");
+    this.response = Preconditions.checkNotNull(response, "response");
+  }
+
+  /**
+   * Get query type
+   *
+   * @return query type
+   */
+  @NonNull
+  public QueryType getQueryType() {
+    return queryType;
+  }
+
+  /**
+   * Get querier address
+   *
+   * @return querier address
+   */
+  @NonNull
+  public InetAddress getQuerierAddress() {
+    return querierAddress;
+  }
+
+  /**
+   * Get query response
+   *
+   * @return query response
+   */
+  @NonNull
+  public QueryResponse getResponse() {
+    return response;
+  }
+
+  /**
+   * Set query response
+   *
+   * @param response query response
+   */
+  public void setResponse(@NonNull QueryResponse response) {
+    this.response = Preconditions.checkNotNull(response, "response");
+  }
+
+  @Override
+  public String toString() {
+    return "ProxyQueryEvent{" +
+        "queryType=" + queryType +
+        ", querierAddress=" + querierAddress +
+        ", response=" + response +
+        '}';
+  }
+
+  /**
+   * The type of query
+   */
+  public enum QueryType {
+    /**
+     * Basic query asks only a subset of information, such as hostname, game type (hardcoded to
+     * <pre>MINECRAFT</pre>), map, current players, max players, proxy port and proxy hostname
+     */
+    BASIC,
 
     /**
-     * Get query type
+     * Full query asks pretty much everything present on this event (only hardcoded values cannot be
-     * @return query type
+     * modified here).
      */
-    @NonNull
+    FULL;
-    public QueryType getQueryType() {
+  }
-        return queryType;
-    }
-
-    /**
-     * Get querier address
-     * @return querier address
-     */
-    @NonNull
-    public InetAddress getQuerierAddress() {
-        return querierAddress;
-    }
-
-    /**
-     * Get query response
-     * @return query response
-     */
-    @NonNull
-    public QueryResponse getResponse() {
-        return response;
-    }
-
-    /**
-     * Set query response
-     * @param response query response
-     */
-    public void setResponse(@NonNull QueryResponse response) {
-        this.response = Preconditions.checkNotNull(response, "response");
-    }
-
-    @Override
-    public String toString() {
-        return "ProxyQueryEvent{" +
-                "queryType=" + queryType +
-                ", querierAddress=" + querierAddress +
-                ", response=" + response +
-                '}';
-    }
-
-    /**
-     * The type of query
-     */
-    public enum QueryType {
-        /**
-         * Basic query asks only a subset of information, such as hostname, game type (hardcoded to <pre>MINECRAFT</pre>), map,
-         * current players, max players, proxy port and proxy hostname
-         */
-        BASIC,
-
-        /**
-         * Full query asks pretty much everything present on this event (only hardcoded values cannot be modified here).
-         */
-        FULL
-        ;
-    }
 }

api/src/main/java/com/velocitypowered/api/permission/PermissionFunction.java

@@ -1,31 +1,31 @@
 package com.velocitypowered.api.permission;
 
 /**
- * Function that calculates the permission settings for a given
+ * Function that calculates the permission settings for a given {@link PermissionSubject}.
- * {@link PermissionSubject}.
  */
 @FunctionalInterface
 public interface PermissionFunction {
-    /**
-     * A permission function that always returns {@link Tristate#TRUE}.
-     */
-    PermissionFunction ALWAYS_TRUE = p -> Tristate.TRUE;
 
-    /**
+  /**
-     * A permission function that always returns {@link Tristate#FALSE}.
+   * A permission function that always returns {@link Tristate#TRUE}.
-     */
+   */
-    PermissionFunction ALWAYS_FALSE = p -> Tristate.FALSE;
+  PermissionFunction ALWAYS_TRUE = p -> Tristate.TRUE;
 
-    /**
+  /**
-     * A permission function that always returns {@link Tristate#UNDEFINED}.
+   * A permission function that always returns {@link Tristate#FALSE}.
-     */
+   */
-    PermissionFunction ALWAYS_UNDEFINED = p -> Tristate.UNDEFINED;
+  PermissionFunction ALWAYS_FALSE = p -> Tristate.FALSE;
 
-    /**
+  /**
-     * Gets the subjects setting for a particular permission.
+   * A permission function that always returns {@link Tristate#UNDEFINED}.
-     *
+   */
-     * @param permission the permission
+  PermissionFunction ALWAYS_UNDEFINED = p -> Tristate.UNDEFINED;
-     * @return the value the permission is set to
+
-     */
+  /**
-    Tristate getPermissionValue(String permission);
+   * Gets the subjects setting for a particular permission.
+   *
+   * @param permission the permission
+   * @return the value the permission is set to
+   */
+  Tristate getPermissionValue(String permission);
 }

api/src/main/java/com/velocitypowered/api/permission/PermissionProvider.java

@@ -5,11 +5,12 @@ package com.velocitypowered.api.permission;
  */
 @FunctionalInterface
 public interface PermissionProvider {
-    /**
+
-     * Creates a {@link PermissionFunction} for the subject.
+  /**
-     *
+   * Creates a {@link PermissionFunction} for the subject.
-     * @param subject the subject
+   *
-     * @return the function
+   * @param subject the subject
-     */
+   * @return the function
-    PermissionFunction createFunction(PermissionSubject subject);
+   */
+  PermissionFunction createFunction(PermissionSubject subject);
 }

api/src/main/java/com/velocitypowered/api/permission/PermissionSubject.java

@@ -4,21 +4,22 @@ package com.velocitypowered.api.permission;
  * Represents a object that has a set of queryable permissions.
  */
 public interface PermissionSubject {
-    /**
-     * Determines whether or not the subject has a particular permission.
-     *
-     * @param permission the permission to check for
-     * @return whether or not the subject has the permission
-     */
-    default boolean hasPermission(String permission) {
-        return getPermissionValue(permission).asBoolean();
-    }
 
-    /**
+  /**
-     * Gets the subjects setting for a particular permission.
+   * Determines whether or not the subject has a particular permission.
-     *
+   *
-     * @param permission the permission
+   * @param permission the permission to check for
-     * @return the value the permission is set to
+   * @return whether or not the subject has the permission
-     */
+   */
-    Tristate getPermissionValue(String permission);
+  default boolean hasPermission(String permission) {
+    return getPermissionValue(permission).asBoolean();
+  }
+
+  /**
+   * Gets the subjects setting for a particular permission.
+   *
+   * @param permission the permission
+   * @return the value the permission is set to
+   */
+  Tristate getPermissionValue(String permission);
 }

api/src/main/java/com/velocitypowered/api/permission/Tristate.java

@@ -8,69 +8,70 @@ import org.checkerframework.checker.nullness.qual.Nullable;
  * <p>Possible values:</p>
  * <p></p>
  * <ul>
- *     <li>{@link #TRUE} - a positive setting</li>
+ * <li>{@link #TRUE} - a positive setting</li>
- *     <li>{@link #FALSE} - a negative (negated) setting</li>
+ * <li>{@link #FALSE} - a negative (negated) setting</li>
- *     <li>{@link #UNDEFINED} - a non-existent setting</li>
+ * <li>{@link #UNDEFINED} - a non-existent setting</li>
  * </ul>
  */
 public enum Tristate {
 
-    /**
+  /**
-     * A value indicating a positive setting
+   * A value indicating a positive setting
-     */
+   */
-    TRUE(true),
+  TRUE(true),
 
-    /**
+  /**
-     * A value indicating a negative (negated) setting
+   * A value indicating a negative (negated) setting
-     */
+   */
-    FALSE(false),
+  FALSE(false),
 
-    /**
+  /**
-     * A value indicating a non-existent setting
+   * A value indicating a non-existent setting
-     */
+   */
-    UNDEFINED(false);
+  UNDEFINED(false);
 
-    /**
+  /**
-     * Returns a {@link Tristate} from a boolean
+   * Returns a {@link Tristate} from a boolean
-     *
+   *
-     * @param val the boolean value
+   * @param val the boolean value
-     * @return {@link #TRUE} or {@link #FALSE}, if the value is <code>true</code> or <code>false</code>, respectively.
+   * @return {@link #TRUE} or {@link #FALSE}, if the value is <code>true</code> or
-     */
+   * <code>false</code>, respectively.
-    public static Tristate fromBoolean(boolean val) {
+   */
-        return val ? TRUE : FALSE;
+  public static Tristate fromBoolean(boolean val) {
+    return val ? TRUE : FALSE;
+  }
+
+  /**
+   * Returns a {@link Tristate} from a nullable boolean.
+   *
+   * <p>Unlike {@link #fromBoolean(boolean)}, this method returns {@link #UNDEFINED}
+   * if the value is null.</p>
+   *
+   * @param val the boolean value
+   * @return {@link #UNDEFINED}, {@link #TRUE} or {@link #FALSE}, if the value is <code>null</code>,
+   * <code>true</code> or <code>false</code>, respectively.
+   */
+  public static Tristate fromNullableBoolean(@Nullable Boolean val) {
+    if (val == null) {
+      return UNDEFINED;
     }
+    return val ? TRUE : FALSE;
+  }
 
-    /**
+  private final boolean booleanValue;
-     * Returns a {@link Tristate} from a nullable boolean.
-     *
-     * <p>Unlike {@link #fromBoolean(boolean)}, this method returns {@link #UNDEFINED}
-     * if the value is null.</p>
-     *
-     * @param val the boolean value
-     * @return {@link #UNDEFINED}, {@link #TRUE} or {@link #FALSE}, if the value
-     *         is <code>null</code>, <code>true</code> or <code>false</code>, respectively.
-     */
-    public static Tristate fromNullableBoolean(@Nullable Boolean val) {
-        if (val == null) {
-            return UNDEFINED;
-        }
-        return val ? TRUE : FALSE;
-    }
 
-    private final boolean booleanValue;
+  Tristate(boolean booleanValue) {
+    this.booleanValue = booleanValue;
+  }
 
-    Tristate(boolean booleanValue) {
+  /**
-        this.booleanValue = booleanValue;
+   * Returns the value of the Tristate as a boolean.
-    }
+   *
-
+   * <p>A value of {@link #UNDEFINED} converts to false.</p>
-    /**
+   *
-     * Returns the value of the Tristate as a boolean.
+   * @return a boolean representation of the Tristate.
-     *
+   */
-     * <p>A value of {@link #UNDEFINED} converts to false.</p>
+  public boolean asBoolean() {
-     *
+    return this.booleanValue;
-     * @return a boolean representation of the Tristate.
+  }
-     */
-    public boolean asBoolean() {
-        return this.booleanValue;
-    }
 }

api/src/main/java/com/velocitypowered/api/plugin/Dependency.java

@@ -10,19 +10,19 @@ import java.lang.annotation.Target;
 @Retention(RetentionPolicy.RUNTIME)
 @Target({})
 public @interface Dependency {
-    /**
-     * The plugin ID of the dependency.
-     *
-     * @return The dependency plugin ID
-     * @see Plugin#id()
-     */
-    String id();
 
-    /**
+  /**
-     * If this dependency is optional for the plugin to work. By default
+   * The plugin ID of the dependency.
-     * this is {@code false}.
+   *
-     *
+   * @return The dependency plugin ID
-     * @return true if the dependency is optional for the plugin to work
+   * @see Plugin#id()
-     */
+   */
-    boolean optional() default false;
+  String id();
+
+  /**
+   * If this dependency is optional for the plugin to work. By default this is {@code false}.
+   *
+   * @return true if the dependency is optional for the plugin to work
+   */
+  boolean optional() default false;
 }

api/src/main/java/com/velocitypowered/api/plugin/InvalidPluginException.java

@@ -1,19 +1,20 @@
 package com.velocitypowered.api.plugin;
 
 public class InvalidPluginException extends Exception {
-    public InvalidPluginException() {
-        super();
-    }
 
-    public InvalidPluginException(String message) {
+  public InvalidPluginException() {
-        super(message);
+    super();
-    }
+  }
 
-    public InvalidPluginException(String message, Throwable cause) {
+  public InvalidPluginException(String message) {
-        super(message, cause);
+    super(message);
-    }
+  }
 
-    public InvalidPluginException(Throwable cause) {
+  public InvalidPluginException(String message, Throwable cause) {
-        super(cause);
+    super(message, cause);
-    }
+  }
+
+  public InvalidPluginException(Throwable cause) {
+    super(cause);
+  }
 }

api/src/main/java/com/velocitypowered/api/plugin/Plugin.java

@@ -11,56 +11,55 @@ import java.lang.annotation.Target;
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
 public @interface Plugin {
-    /**
-     * The ID of the plugin. This ID should be unique as to
-     * not conflict with other plugins.
-     *
-     * The plugin ID must match the {@link PluginDescription#ID_PATTERN}.
-     *
-     * @return the ID for this plugin
-     */
-    String id();
 
-    /**
+  /**
-     * The human readable name of the plugin as to be used in descriptions and
+   * The ID of the plugin. This ID should be unique as to not conflict with other plugins.
-     * similar things.
+   *
-     *
+   * The plugin ID must match the {@link PluginDescription#ID_PATTERN}.
-     * @return The plugin name, or an empty string if unknown
+   *
-     */
+   * @return the ID for this plugin
-    String name() default "";
+   */
+  String id();
 
-    /**
+  /**
-     * The version of the plugin.
+   * The human readable name of the plugin as to be used in descriptions and similar things.
-     *
+   *
-     * @return the version of the plugin, or an empty string if unknown
+   * @return The plugin name, or an empty string if unknown
-     */
+   */
-    String version() default "";
+  String name() default "";
 
-    /**
+  /**
-     * The description of the plugin, explaining what it can be used for.
+   * The version of the plugin.
-     *
+   *
-     * @return The plugin description, or an empty string if unknown
+   * @return the version of the plugin, or an empty string if unknown
-     */
+   */
-    String description() default "";
+  String version() default "";
 
-    /**
+  /**
-     * The URL or website of the plugin.
+   * The description of the plugin, explaining what it can be used for.
-     *
+   *
-     * @return The plugin url, or an empty string if unknown
+   * @return The plugin description, or an empty string if unknown
-     */
+   */
-    String url() default "";
+  String description() default "";
 
-    /**
+  /**
-     * The author of the plugin.
+   * The URL or website of the plugin.
-     *
+   *
-     * @return the plugin's author, or empty if unknown
+   * @return The plugin url, or an empty string if unknown
-     */
+   */
-    String[] authors() default "";
+  String url() default "";
 
-    /**
+  /**
-     * The dependencies required to load before this plugin.
+   * The author of the plugin.
-     *
+   *
-     * @return the plugin dependencies
+   * @return the plugin's author, or empty if unknown
-     */
+   */
-    Dependency[] dependencies() default {};
+  String[] authors() default "";
+
+  /**
+   * The dependencies required to load before this plugin.
+   *
+   * @return the plugin dependencies
+   */
+  Dependency[] dependencies() default {};
 }

api/src/main/java/com/velocitypowered/api/plugin/PluginContainer.java

@@ -6,19 +6,20 @@ import java.util.Optional;
  * A wrapper around a plugin loaded by the proxy.
  */
 public interface PluginContainer {
-    /**
-     * Returns the plugin's description.
-     *
-     * @return the plugin's description
-     */
-    PluginDescription getDescription();
 
-    /**
+  /**
-     * Returns the created plugin if it is available.
+   * Returns the plugin's description.
-     *
+   *
-     * @return the instance if available
+   * @return the plugin's description
-     */
+   */
-    default Optional<?> getInstance() {
+  PluginDescription getDescription();
-        return Optional.empty();
+
-    }
+  /**
+   * Returns the created plugin if it is available.
+   *
+   * @return the instance if available
+   */
+  default Optional<?> getInstance() {
+    return Optional.empty();
+  }
 }

api/src/main/java/com/velocitypowered/api/plugin/PluginDescription.java

@@ -3,7 +3,6 @@ package com.velocitypowered.api.plugin;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.velocitypowered.api.plugin.meta.PluginDependency;
-
 import java.nio.file.Path;
 import java.util.Collection;
 import java.util.List;
@@ -14,93 +13,92 @@ import java.util.regex.Pattern;
  * Represents metadata for a specific version of a plugin.
  */
 public interface PluginDescription {
-    /**
-     * The pattern plugin IDs must match. Plugin IDs may only contain
-     * alphanumeric characters, dashes or underscores, must start with
-     * an alphabetic character and cannot be longer than 64 characters.
-     */
-    Pattern ID_PATTERN = Pattern.compile("[a-z][a-z0-9-_]{0,63}");
 
-    /**
+  /**
-     * Gets the qualified ID of the {@link Plugin} within this container.
+   * The pattern plugin IDs must match. Plugin IDs may only contain alphanumeric characters, dashes
-     *
+   * or underscores, must start with an alphabetic character and cannot be longer than 64
-     * @return the plugin ID
+   * characters.
-     * @see Plugin#id()
+   */
-     */
+  Pattern ID_PATTERN = Pattern.compile("[a-z][a-z0-9-_]{0,63}");
-    String getId();
 
-    /**
+  /**
-     * Gets the name of the {@link Plugin} within this container.
+   * Gets the qualified ID of the {@link Plugin} within this container.
-     *
+   *
-     * @return an {@link Optional} with the plugin name, may be empty
+   * @return the plugin ID
-     * @see Plugin#name()
+   * @see Plugin#id()
-     */
+   */
-    default Optional<String> getName() {
+  String getId();
-        return Optional.empty();
-    }
 
-    /**
+  /**
-     * Gets the version of the {@link Plugin} within this container.
+   * Gets the name of the {@link Plugin} within this container.
-     *
+   *
-     * @return an {@link Optional} with the plugin version, may be empty
+   * @return an {@link Optional} with the plugin name, may be empty
-     * @see Plugin#version()
+   * @see Plugin#name()
-     */
+   */
-    default Optional<String> getVersion() {
+  default Optional<String> getName() {
-        return Optional.empty();
+    return Optional.empty();
-    }
+  }
 
-    /**
+  /**
-     * Gets the description of the {@link Plugin} within this container.
+   * Gets the version of the {@link Plugin} within this container.
-     *
+   *
-     * @return an {@link Optional} with the plugin description, may be empty
+   * @return an {@link Optional} with the plugin version, may be empty
-     * @see Plugin#description()
+   * @see Plugin#version()
-     */
+   */
-    default Optional<String> getDescription() {
+  default Optional<String> getVersion() {
-        return Optional.empty();
+    return Optional.empty();
-    }
+  }
 
-    /**
+  /**
-     * Gets the url or website of the {@link Plugin} within this container.
+   * Gets the description of the {@link Plugin} within this container.
-     *
+   *
-     * @return an {@link Optional} with the plugin url, may be empty
+   * @return an {@link Optional} with the plugin description, may be empty
-     * @see Plugin#url()
+   * @see Plugin#description()
-     */
+   */
-    default Optional<String> getUrl() {
+  default Optional<String> getDescription() {
-        return Optional.empty();
+    return Optional.empty();
-    }
+  }
 
-    /**
+  /**
-     * Gets the authors of the {@link Plugin} within this container.
+   * Gets the url or website of the {@link Plugin} within this container.
-     *
+   *
-     * @return the plugin authors, may be empty
+   * @return an {@link Optional} with the plugin url, may be empty
-     * @see Plugin#authors()
+   * @see Plugin#url()
-     */
+   */
-    default List<String> getAuthors() {
+  default Optional<String> getUrl() {
-        return ImmutableList.of();
+    return Optional.empty();
-    }
+  }
 
-    /**
+  /**
-     * Gets a {@link Collection} of all dependencies of the {@link Plugin} within
+   * Gets the authors of the {@link Plugin} within this container.
-     * this container.
+   *
-     *
+   * @return the plugin authors, may be empty
-     * @return the plugin dependencies, can be empty
+   * @see Plugin#authors()
-     * @see Plugin#dependencies()
+   */
-     */
+  default List<String> getAuthors() {
-    default Collection<PluginDependency> getDependencies() {
+    return ImmutableList.of();
-        return ImmutableSet.of();
+  }
-    }
 
-    default Optional<PluginDependency> getDependency(String id) {
+  /**
-        return Optional.empty();
+   * Gets a {@link Collection} of all dependencies of the {@link Plugin} within this container.
-    }
+   *
+   * @return the plugin dependencies, can be empty
+   * @see Plugin#dependencies()
+   */
+  default Collection<PluginDependency> getDependencies() {
+    return ImmutableSet.of();
+  }
 
-    /**
+  default Optional<PluginDependency> getDependency(String id) {
-     * Returns the source the plugin was loaded from.
+    return Optional.empty();
-     *
+  }
-     * @return the source the plugin was loaded from or {@link Optional#empty()}
+
-     *         if unknown
+  /**
-     */
+   * Returns the source the plugin was loaded from.
-    default Optional<Path> getSource() {
+   *
-        return Optional.empty();
+   * @return the source the plugin was loaded from or {@link Optional#empty()} if unknown
-    }
+   */
+  default Optional<Path> getSource() {
+    return Optional.empty();
+  }
 }

api/src/main/java/com/velocitypowered/api/plugin/PluginManager.java

@@ -5,47 +5,49 @@ import java.util.Collection;
 import java.util.Optional;
 
 /**
- * Manages plugins loaded on the proxy. This manager can retrieve {@link PluginContainer}s from plugin instances
+ * Manages plugins loaded on the proxy. This manager can retrieve {@link PluginContainer}s from
- * and inject arbitrary JAR files into the plugin classpath with {@link #addToClasspath(Object, Path)}.
+ * plugin instances and inject arbitrary JAR files into the plugin classpath with {@link
+ * #addToClasspath(Object, Path)}.
  */
 public interface PluginManager {
-    /**
-     * Gets the plugin container from an instance.
-     *
-     * @param instance the instance
-     * @return the container
-     */
-    Optional<PluginContainer> fromInstance(Object instance);
 
-    /**
+  /**
-     * Retrieves a {@link PluginContainer} based on its ID.
+   * Gets the plugin container from an instance.
-     *
+   *
-     * @param id the plugin ID
+   * @param instance the instance
-     * @return the plugin, if available
+   * @return the container
-     */
+   */
-    Optional<PluginContainer> getPlugin(String id);
+  Optional<PluginContainer> fromInstance(Object instance);
 
-    /**
+  /**
-     * Gets a {@link Collection} of all {@link PluginContainer}s.
+   * Retrieves a {@link PluginContainer} based on its ID.
-     *
+   *
-     * @return the plugins
+   * @param id the plugin ID
-     */
+   * @return the plugin, if available
-    Collection<PluginContainer> getPlugins();
+   */
+  Optional<PluginContainer> getPlugin(String id);
 
-    /**
+  /**
-     * Checks if a plugin is loaded based on its ID.
+   * Gets a {@link Collection} of all {@link PluginContainer}s.
-     *
+   *
-     * @param id the id of the plugin
+   * @return the plugins
-     * @return {@code true} if loaded
+   */
-     */
+  Collection<PluginContainer> getPlugins();
-    boolean isLoaded(String id);
 
-    /**
+  /**
-     * Adds the specified {@code path} to the plugin classpath.
+   * Checks if a plugin is loaded based on its ID.
-     *
+   *
-     * @param plugin the plugin
+   * @param id the id of the plugin
-     * @param path the path to the JAR you want to inject into the classpath
+   * @return {@code true} if loaded
-     * @throws UnsupportedOperationException if the operation is not applicable to this plugin
+   */
-     */
+  boolean isLoaded(String id);
-    void addToClasspath(Object plugin, Path path);
+
+  /**
+   * Adds the specified {@code path} to the plugin classpath.
+   *
+   * @param plugin the plugin
+   * @param path the path to the JAR you want to inject into the classpath
+   * @throws UnsupportedOperationException if the operation is not applicable to this plugin
+   */
+  void addToClasspath(Object plugin, Path path);
 }

api/src/main/java/com/velocitypowered/api/plugin/annotation/DataDirectory.java

@@ -1,18 +1,18 @@
 package com.velocitypowered.api.plugin.annotation;
 
 import com.google.inject.BindingAnnotation;
-
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * This annotation requests that Velocity inject a {@link java.nio.file.Path} instance with a plugin-specific data
+ * This annotation requests that Velocity inject a {@link java.nio.file.Path} instance with a
- * directory.
+ * plugin-specific data directory.
  */
 @Target({ElementType.FIELD, ElementType.PARAMETER})
 @Retention(RetentionPolicy.RUNTIME)
 @BindingAnnotation
 public @interface DataDirectory {
+
 }

api/src/main/java/com/velocitypowered/api/plugin/meta/PluginDependency.java

@@ -1,80 +1,83 @@
 package com.velocitypowered.api.plugin.meta;
 
-import org.checkerframework.checker.nullness.qual.Nullable;
-
-import java.util.Objects;
-import java.util.Optional;
-
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static com.google.common.base.Strings.emptyToNull;
 
+import java.util.Objects;
+import java.util.Optional;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 /**
  * Represents a dependency on another plugin.
  */
 public final class PluginDependency {
-    private final String id;
-    @Nullable
-    private final String version;
 
-    private final boolean optional;
+  private final String id;
+  @Nullable
+  private final String version;
 
-    public PluginDependency(String id, @Nullable String version, boolean optional) {
+  private final boolean optional;
-        this.id = checkNotNull(id, "id");
+
-        checkArgument(!id.isEmpty(), "id cannot be empty");
+  public PluginDependency(String id, @Nullable String version, boolean optional) {
-        this.version = emptyToNull(version);
+    this.id = checkNotNull(id, "id");
-        this.optional = optional;
+    checkArgument(!id.isEmpty(), "id cannot be empty");
+    this.version = emptyToNull(version);
+    this.optional = optional;
+  }
+
+  /**
+   * Returns the plugin ID of this {@link PluginDependency}
+   *
+   * @return the plugin ID
+   */
+  public String getId() {
+    return id;
+  }
+
+  /**
+   * Returns the version this {@link PluginDependency} should match.
+   *
+   * @return an {@link Optional} with the plugin version, may be empty
+   */
+  public Optional<String> getVersion() {
+    return Optional.ofNullable(version);
+  }
+
+  /**
+   * Returns whether the dependency is optional for the plugin to work correctly.
+   *
+   * @return true if dependency is optional
+   */
+  public boolean isOptional() {
+    return optional;
+  }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
     }
-
+    if (o == null || getClass() != o.getClass()) {
-    /**
+      return false;
-     * Returns the plugin ID of this {@link PluginDependency}
-     *
-     * @return the plugin ID
-     */
-    public String getId() {
-        return id;
     }
+    PluginDependency that = (PluginDependency) o;
+    return optional == that.optional &&
+        Objects.equals(id, that.id) &&
+        Objects.equals(version, that.version);
+  }
 
-    /**
+  @Override
-     * Returns the version this {@link PluginDependency} should match.
+  public int hashCode() {
-     *
+    return Objects.hash(id, version, optional);
-     * @return an {@link Optional} with the plugin version, may be empty
+  }
-     */
-    public Optional<String> getVersion() {
-        return Optional.ofNullable(version);
-    }
 
-    /**
+  @Override
-     * Returns whether the dependency is optional for the plugin to work
+  public String toString() {
-     * correctly.
+    return "PluginDependency{" +
-     *
+        "id='" + id + '\'' +
-     * @return true if dependency is optional
+        ", version='" + version + '\'' +
-     */
+        ", optional=" + optional +
-    public boolean isOptional() {
+        '}';
-        return optional;
+  }
-    }
-
-    @Override
-    public boolean equals(@Nullable Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        PluginDependency that = (PluginDependency) o;
-        return optional == that.optional &&
-                Objects.equals(id, that.id) &&
-                Objects.equals(version, that.version);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(id, version, optional);
-    }
-
-    @Override
-    public String toString() {
-        return "PluginDependency{" +
-                "id='" + id + '\'' +
-                ", version='" + version + '\'' +
-                ", optional=" + optional +
-                '}';
-    }
 }

api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java

@@ -1,91 +1,100 @@
 package com.velocitypowered.api.proxy;
 
 import com.velocitypowered.api.proxy.server.RegisteredServer;
-import net.kyori.text.Component;
-
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
+import net.kyori.text.Component;
 
 /**
- * Provides a fluent interface to compose and send a connection request to another server behind the proxy. A connection
+ * Provides a fluent interface to compose and send a connection request to another server behind the
- * request is created using {@link Player#createConnectionRequest(RegisteredServer)}.
+ * proxy. A connection request is created using {@link Player#createConnectionRequest(RegisteredServer)}.
  */
 public interface ConnectionRequestBuilder {
-    /**
+
-     * Returns the server that this connection request represents.
+  /**
-     * @return the server this request will connect to
+   * Returns the server that this connection request represents.
-     */
+   *
-    RegisteredServer getServer();
+   * @return the server this request will connect to
+   */
+  RegisteredServer getServer();
+
+  /**
+   * Initiates the connection to the remote server and emits a result on the {@link
+   * CompletableFuture} after the user has logged on. No messages will be communicated to the
+   * client: the user is responsible for all error handling.
+   *
+   * @return a {@link CompletableFuture} representing the status of this connection
+   */
+  CompletableFuture<Result> connect();
+
+  /**
+   * Initiates the connection to the remote server and emits a result on the {@link
+   * CompletableFuture} after the user has logged on. Velocity's own built-in handling will be used
+   * to provide errors to the client.
+   *
+   * @return a {@link CompletableFuture} representing the status of this connection
+   */
+  CompletableFuture<Boolean> connectWithIndication();
+
+  /**
+   * Initiates the connection to the remote server without waiting for a result. Velocity will use
+   * generic error handling code to notify the user.
+   */
+  void fireAndForget();
+
+  /**
+   * Represents the result of a connection request.
+   */
+  interface Result {
 
     /**
-     * Initiates the connection to the remote server and emits a result on the {@link CompletableFuture} after the user
+     * Determines whether or not the connection request was successful.
-     * has logged on. No messages will be communicated to the client: the user is responsible for all error handling.
+     *
-     * @return a {@link CompletableFuture} representing the status of this connection
+     * @return whether or not the request succeeded
      */
-    CompletableFuture<Result> connect();
+    default boolean isSuccessful() {
-
+      return getStatus() == Status.SUCCESS;
-    /**
-     * Initiates the connection to the remote server and emits a result on the {@link CompletableFuture} after the user
-     * has logged on. Velocity's own built-in handling will be used to provide errors to the client.
-     * @return a {@link CompletableFuture} representing the status of this connection
-     */
-    CompletableFuture<Boolean> connectWithIndication();
-
-    /**
-     * Initiates the connection to the remote server without waiting for a result. Velocity will use generic error
-     * handling code to notify the user.
-     */
-    void fireAndForget();
-
-    /**
-     * Represents the result of a connection request.
-     */
-    interface Result {
-        /**
-         * Determines whether or not the connection request was successful.
-         * @return whether or not the request succeeded
-         */
-        default boolean isSuccessful() {
-            return getStatus() == Status.SUCCESS;
-        }
-
-        /**
-         * Returns the status associated with this result.
-         * @return the status for this result
-         */
-        Status getStatus();
-
-        /**
-         * Returns an (optional) textual reason for the failure to connect to the server.
-         * @return the reason why the user could not connect to the server
-         */
-        Optional<Component> getReason();
     }
 
     /**
-     * Represents the status of a connection request initiated by a {@link ConnectionRequestBuilder}.
+     * Returns the status associated with this result.
+     *
+     * @return the status for this result
      */
-    enum Status {
+    Status getStatus();
-        /**
+
-         * The player was successfully connected to the server.
+    /**
-         */
+     * Returns an (optional) textual reason for the failure to connect to the server.
-        SUCCESS,
+     *
-        /**
+     * @return the reason why the user could not connect to the server
-         * The player is already connected to this server.
+     */
-         */
+    Optional<Component> getReason();
-        ALREADY_CONNECTED,
+  }
-        /**
+
-         * The connection is already in progress.
+  /**
-         */
+   * Represents the status of a connection request initiated by a {@link ConnectionRequestBuilder}.
-        CONNECTION_IN_PROGRESS,
+   */
-        /**
+  enum Status {
-         * A plugin has cancelled this connection.
+    /**
-         */
+     * The player was successfully connected to the server.
-        CONNECTION_CANCELLED,
+     */
-        /**
+    SUCCESS,
-         * The server disconnected the user. A reason may be provided in the {@link Result} object.
+    /**
-         */
+     * The player is already connected to this server.
-        SERVER_DISCONNECTED
+     */
-    }
+    ALREADY_CONNECTED,
+    /**
+     * The connection is already in progress.
+     */
+    CONNECTION_IN_PROGRESS,
+    /**
+     * A plugin has cancelled this connection.
+     */
+    CONNECTION_CANCELLED,
+    /**
+     * The server disconnected the user. A reason may be provided in the {@link Result} object.
+     */
+    SERVER_DISCONNECTED
+  }
 
 }

api/src/main/java/com/velocitypowered/api/proxy/InboundConnection.java

@@ -7,27 +7,32 @@ import java.util.Optional;
  * Represents an incoming connection to the proxy.
  */
 public interface InboundConnection {
-    /**
-     * Returns the player's IP address.
-     * @return the player's IP
-     */
-    InetSocketAddress getRemoteAddress();
 
-    /**
+  /**
-     * Returns the hostname that the user entered into the client, if applicable.
+   * Returns the player's IP address.
-     * @return the hostname from the client
+   *
-     */
+   * @return the player's IP
-    Optional<InetSocketAddress> getVirtualHost();
+   */
+  InetSocketAddress getRemoteAddress();
 
-    /**
+  /**
-     * Determine whether or not the player remains online.
+   * Returns the hostname that the user entered into the client, if applicable.
-     * @return whether or not the player active
+   *
-     */
+   * @return the hostname from the client
-    boolean isActive();
+   */
+  Optional<InetSocketAddress> getVirtualHost();
 
-    /**
+  /**
-     * Returns the current protocol version this connection uses.
+   * Determine whether or not the player remains online.
-     * @return the protocol version the connection uses
+   *
-     */
+   * @return whether or not the player active
-    int getProtocolVersion();
+   */
+  boolean isActive();
+
+  /**
+   * Returns the current protocol version this connection uses.
+   *
+   * @return the protocol version the connection uses
+   */
+  int getProtocolVersion();
 }

api/src/main/java/com/velocitypowered/api/proxy/Player.java

@@ -4,136 +4,150 @@ import com.velocitypowered.api.command.CommandSource;
 import com.velocitypowered.api.proxy.messages.ChannelMessageSink;
 import com.velocitypowered.api.proxy.messages.ChannelMessageSource;
 import com.velocitypowered.api.proxy.player.PlayerSettings;
+import com.velocitypowered.api.proxy.player.TabList;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.util.GameProfile;
-import com.velocitypowered.api.proxy.player.TabList;
 import com.velocitypowered.api.util.MessagePosition;
 import com.velocitypowered.api.util.ModInfo;
 import com.velocitypowered.api.util.title.Title;
 import java.util.List;
-
-import net.kyori.text.Component;
-
 import java.util.Optional;
 import java.util.UUID;
+import net.kyori.text.Component;
 
 /**
  * Represents a player who is connected to the proxy.
  */
-public interface Player extends CommandSource, InboundConnection, ChannelMessageSource, ChannelMessageSink {
+public interface Player extends CommandSource, InboundConnection, ChannelMessageSource,
-    /**
+    ChannelMessageSink {
-     * Returns the player's current username.
-     * @return the username
-     */
-    String getUsername();
 
-    /**
+  /**
-     * Returns the player's UUID.
+   * Returns the player's current username.
-     * @return the UUID
+   *
-     */
+   * @return the username
-    UUID getUniqueId();
+   */
+  String getUsername();
 
-    /**
+  /**
-     * Returns the server that the player is currently connected to.
+   * Returns the player's UUID.
-     * @return an {@link Optional} the server that the player is connected to, which may be empty
+   *
-     */
+   * @return the UUID
-    Optional<ServerConnection> getCurrentServer();
+   */
+  UUID getUniqueId();
 
-    /**
+  /**
-     * Returns the player settings
+   * Returns the server that the player is currently connected to.
-     * @return the settings
+   *
-     */
+   * @return an {@link Optional} the server that the player is connected to, which may be empty
-    PlayerSettings getPlayerSettings();
+   */
+  Optional<ServerConnection> getCurrentServer();
 
-    /**
+  /**
-     * Returns the player's mod info if they have a modded client.
+   * Returns the player settings
-     * @return an {@link Optional} the mod info. which may be empty
+   *
-     */
+   * @return the settings
-    Optional<ModInfo> getModInfo();
+   */
+  PlayerSettings getPlayerSettings();
 
-    /**
+  /**
-     * Returns the current player's ping
+   * Returns the player's mod info if they have a modded client.
-     * @return the player's ping or -1 if ping information is currently unknown
+   *
-     */
+   * @return an {@link Optional} the mod info. which may be empty
-    long getPing();
+   */
+  Optional<ModInfo> getModInfo();
 
-    /**
+  /**
-     * Sends a chat message to the player's client.
+   * Returns the current player's ping
-     * @param component the chat message to send
+   *
-     */
+   * @return the player's ping or -1 if ping information is currently unknown
-    default void sendMessage(Component component) {
+   */
-        sendMessage(component, MessagePosition.CHAT);
+  long getPing();
-    }
 
-    /**
+  /**
-     * Sends a chat message to the player's client in the specified position.
+   * Sends a chat message to the player's client.
-     * @param component the chat message to send
+   *
-     * @param position the position for the message
+   * @param component the chat message to send
-     */
+   */
-    void sendMessage(Component component, MessagePosition position);
+  default void sendMessage(Component component) {
+    sendMessage(component, MessagePosition.CHAT);
+  }
 
-    /**
+  /**
-     * Creates a new connection request so that the player can connect to another server.
+   * Sends a chat message to the player's client in the specified position.
-     * @param server the server to connect to
+   *
-     * @return a new connection request
+   * @param component the chat message to send
-     */
+   * @param position the position for the message
-    ConnectionRequestBuilder createConnectionRequest(RegisteredServer server);
+   */
+  void sendMessage(Component component, MessagePosition position);
 
-    /**
+  /**
-     * Gets the player's profile properties.
+   * Creates a new connection request so that the player can connect to another server.
-     *
+   *
-     * <p>The returned list may be unmodifiable.</p>
+   * @param server the server to connect to
-     *
+   * @return a new connection request
-     * @return the player's profile properties
+   */
-     */
+  ConnectionRequestBuilder createConnectionRequest(RegisteredServer server);
-    List<GameProfile.Property> getGameProfileProperties();
 
-    /**
+  /**
-     * Sets the player's profile properties.
+   * Gets the player's profile properties.
-     *
+   *
-     * @param properties the properties
+   * <p>The returned list may be unmodifiable.</p>
-     */
+   *
-    void setGameProfileProperties(List<GameProfile.Property> properties);
+   * @return the player's profile properties
+   */
+  List<GameProfile.Property> getGameProfileProperties();
 
-    /**
+  /**
-     * Sets the tab list header and footer for the player.
+   * Sets the player's profile properties.
-     * @param header the header component
+   *
-     * @param footer the footer component
+   * @param properties the properties
-     * @deprecated Use {@link TabList#setHeaderAndFooter(Component, Component)}.
+   */
-     */
+  void setGameProfileProperties(List<GameProfile.Property> properties);
-    @Deprecated
-    void setHeaderAndFooter(Component header, Component footer);
 
-    /**
+  /**
-     * Clears the tab list header and footer for the player.
+   * Sets the tab list header and footer for the player.
-     * @deprecated Use {@link TabList#clearHeaderAndFooter()}.
+   *
-     */
+   * @param header the header component
-    @Deprecated
+   * @param footer the footer component
-    void clearHeaderAndFooter();
+   * @deprecated Use {@link TabList#setHeaderAndFooter(Component, Component)}.
+   */
+  @Deprecated
+  void setHeaderAndFooter(Component header, Component footer);
 
-    /**
+  /**
-     * Returns the player's tab list.
+   * Clears the tab list header and footer for the player.
-     * @return this player's tab list
+   *
-     */
+   * @deprecated Use {@link TabList#clearHeaderAndFooter()}.
-    TabList getTabList();
+   */
+  @Deprecated
+  void clearHeaderAndFooter();
 
-    /**
+  /**
-     * Disconnects the player with the specified reason. Once this method is called, further calls to other {@link Player}
+   * Returns the player's tab list.
-     * methods will become undefined.
+   *
-     * @param reason component with the reason
+   * @return this player's tab list
-     */
+   */
-    void disconnect(Component reason);
+  TabList getTabList();
 
-    /**
+  /**
-     * Sends the specified title to the client.
+   * Disconnects the player with the specified reason. Once this method is called, further calls to
-     * @param title the title to send
+   * other {@link Player} methods will become undefined.
-     */
+   *
-    void sendTitle(Title title);
+   * @param reason component with the reason
+   */
+  void disconnect(Component reason);
 
-    /**
+  /**
-     * Sends chat input onto the players current server as if they typed it
+   * Sends the specified title to the client.
-     * into the client chat box.
+   *
-     * @param input the chat input to send
+   * @param title the title to send
-     */
+   */
-    void spoofChatInput(String input);
+  void sendTitle(Title title);
+
+  /**
+   * Sends chat input onto the players current server as if they typed it into the client chat box.
+   *
+   * @param input the chat input to send
+   */
+  void spoofChatInput(String input);
 }

api/src/main/java/com/velocitypowered/api/proxy/ProxyServer.java

@@ -10,132 +10,151 @@ import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.proxy.server.ServerInfo;
 import com.velocitypowered.api.scheduler.Scheduler;
 import com.velocitypowered.api.util.ProxyVersion;
-import net.kyori.text.Component;
-
 import java.net.InetSocketAddress;
 import java.util.Collection;
 import java.util.Optional;
 import java.util.UUID;
+import net.kyori.text.Component;
 
 /**
  * Provides an interface to a Minecraft server proxy.
  */
 public interface ProxyServer {
-    /**
-     * Retrieves the player currently connected to this proxy by their Minecraft username. The search is case-insensitive.
-     * @param username the username to search for
-     * @return an {@link Optional} with the player, which may be empty
-     */
-    Optional<Player> getPlayer(String username);
 
-    /**
+  /**
-     * Retrieves the player currently connected to this proxy by their Minecraft UUID.
+   * Retrieves the player currently connected to this proxy by their Minecraft username. The search
-     * @param uuid the UUID
+   * is case-insensitive.
-     * @return an {@link Optional} with the player, which may be empty
+   *
-     */
+   * @param username the username to search for
-    Optional<Player> getPlayer(UUID uuid);
+   * @return an {@link Optional} with the player, which may be empty
+   */
+  Optional<Player> getPlayer(String username);
 
-    /**
+  /**
-     * Broadcasts a message to all players currently online.
+   * Retrieves the player currently connected to this proxy by their Minecraft UUID.
-     * @param component the message to send
+   *
-     */
+   * @param uuid the UUID
-    void broadcast(Component component);
+   * @return an {@link Optional} with the player, which may be empty
+   */
+  Optional<Player> getPlayer(UUID uuid);
 
-    /**
+  /**
-     * Retrieves all players currently connected to this proxy. This call may or may not be a snapshot of all players
+   * Broadcasts a message to all players currently online.
-     * online.
+   *
-     * @return the players online on this proxy
+   * @param component the message to send
-     */
+   */
-    Collection<Player> getAllPlayers();
+  void broadcast(Component component);
 
-    /**
+  /**
-     * Returns the number of players currently connected to this proxy.
+   * Retrieves all players currently connected to this proxy. This call may or may not be a snapshot
-     * @return the players on this proxy
+   * of all players online.
-     */
+   *
-    int getPlayerCount();
+   * @return the players online on this proxy
+   */
+  Collection<Player> getAllPlayers();
 
-    /**
+  /**
-     * Retrieves a registered {@link RegisteredServer} instance by its name. The search is case-insensitive.
+   * Returns the number of players currently connected to this proxy.
-     * @param name the name of the server
+   *
-     * @return the registered server, which may be empty
+   * @return the players on this proxy
-     */
+   */
-    Optional<RegisteredServer> getServer(String name);
+  int getPlayerCount();
 
-    /**
+  /**
-     * Retrieves all {@link RegisteredServer}s registered with this proxy.
+   * Retrieves a registered {@link RegisteredServer} instance by its name. The search is
-     * @return the servers registered with this proxy
+   * case-insensitive.
-     */
+   *
-    Collection<RegisteredServer> getAllServers();
+   * @param name the name of the server
+   * @return the registered server, which may be empty
+   */
+  Optional<RegisteredServer> getServer(String name);
 
-    /**
+  /**
-     * Registers a server with this proxy. A server with this name should not already exist.
+   * Retrieves all {@link RegisteredServer}s registered with this proxy.
-     * @param server the server to register
+   *
-     * @return the newly registered server
+   * @return the servers registered with this proxy
-     */
+   */
-    RegisteredServer registerServer(ServerInfo server);
+  Collection<RegisteredServer> getAllServers();
 
-    /**
+  /**
-     * Unregisters this server from the proxy.
+   * Registers a server with this proxy. A server with this name should not already exist.
-     * @param server the server to unregister
+   *
-     */
+   * @param server the server to register
-    void unregisterServer(ServerInfo server);
+   * @return the newly registered server
+   */
+  RegisteredServer registerServer(ServerInfo server);
 
-    /**
+  /**
-     * Returns an instance of {@link CommandSource} that can be used to determine if the command is being invoked by
+   * Unregisters this server from the proxy.
-     * the console or a console-like executor. Plugins that execute commands are strongly urged to implement their own
+   *
-     * {@link CommandSource} instead of using the console invoker.
+   * @param server the server to unregister
-     * @return the console command invoker
+   */
-     */
+  void unregisterServer(ServerInfo server);
-    CommandSource getConsoleCommandSource();
 
-    /**
+  /**
-     * Gets the {@link PluginManager} instance.
+   * Returns an instance of {@link CommandSource} that can be used to determine if the command is
-     *
+   * being invoked by the console or a console-like executor. Plugins that execute commands are
-     * @return the plugin manager instance
+   * strongly urged to implement their own {@link CommandSource} instead of using the console
-     */
+   * invoker.
-    PluginManager getPluginManager();
+   *
+   * @return the console command invoker
+   */
+  CommandSource getConsoleCommandSource();
 
-    /**
+  /**
-     * Gets the {@link EventManager} instance.
+   * Gets the {@link PluginManager} instance.
-     *
+   *
-     * @return the event manager instance
+   * @return the plugin manager instance
-     */
+   */
-    EventManager getEventManager();
+  PluginManager getPluginManager();
 
-    /**
+  /**
-     * Gets the {@link CommandManager} instance.
+   * Gets the {@link EventManager} instance.
-     * @return the command manager
+   *
-     */
+   * @return the event manager instance
-    CommandManager getCommandManager();
+   */
+  EventManager getEventManager();
 
-    /**
+  /**
-     * Gets the {@link Scheduler} instance.
+   * Gets the {@link CommandManager} instance.
-     * @return the scheduler instance
+   *
-     */
+   * @return the command manager
-    Scheduler getScheduler();
+   */
+  CommandManager getCommandManager();
 
-    /**
+  /**
-     * Gets the {@link ChannelRegistrar} instance.
+   * Gets the {@link Scheduler} instance.
-     * @return the channel registrar
+   *
-     */
+   * @return the scheduler instance
-    ChannelRegistrar getChannelRegistrar();
+   */
+  Scheduler getScheduler();
 
-    /**
+  /**
-     * Gets the address that this proxy is bound to. This does not necessarily indicate the external IP address of the
+   * Gets the {@link ChannelRegistrar} instance.
-     * proxy.
+   *
-     * @return the address the proxy is bound to
+   * @return the channel registrar
-     */
+   */
-    InetSocketAddress getBoundAddress();
+  ChannelRegistrar getChannelRegistrar();
 
-    /**
+  /**
-     * Gets the {@link ProxyConfig} instance.
+   * Gets the address that this proxy is bound to. This does not necessarily indicate the external
-     * @return the proxy config
+   * IP address of the proxy.
-     * */
+   *
-    ProxyConfig getConfiguration();
+   * @return the address the proxy is bound to
+   */
+  InetSocketAddress getBoundAddress();
 
-    /**
+  /**
-     * Returns the version of the proxy.
+   * Gets the {@link ProxyConfig} instance.
-     * @return the proxy version
+   *
-     */
+   * @return the proxy config
-    ProxyVersion getVersion();
+   */
+  ProxyConfig getConfiguration();
+
+  /**
+   * Returns the version of the proxy.
+   *
+   * @return the proxy version
+   */
+  ProxyVersion getVersion();
 }

api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java

@@ -9,21 +9,25 @@ import com.velocitypowered.api.proxy.server.ServerInfo;
  * Represents a connection to a backend server from the proxy for a client.
  */
 public interface ServerConnection extends ChannelMessageSource, ChannelMessageSink {
-    /**
-     * Returns the server that this connection is connected to.
-     * @return the server this connection is connected to
-     */
-    RegisteredServer getServer();
 
-    /**
+  /**
-     * Returns the server info for this connection.
+   * Returns the server that this connection is connected to.
-     * @return the server info for this connection
+   *
-     */
+   * @return the server this connection is connected to
-    ServerInfo getServerInfo();
+   */
+  RegisteredServer getServer();
 
-    /**
+  /**
-     * Returns the player that this connection is associated with.
+   * Returns the server info for this connection.
-     * @return the player for this connection
+   *
-     */
+   * @return the server info for this connection
-    Player getPlayer();
+   */
+  ServerInfo getServerInfo();
+
+  /**
+   * Returns the player that this connection is associated with.
+   *
+   * @return the player for this connection
+   */
+  Player getPlayer();
 }

api/src/main/java/com/velocitypowered/api/proxy/config/ProxyConfig.java

@@ -1,116 +1,133 @@
 package com.velocitypowered.api.proxy.config;
 
 import com.velocitypowered.api.util.Favicon;
-import net.kyori.text.Component;
-
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import net.kyori.text.Component;
 
 /**
  * Provides an interface to a proxy configuration
  */
 public interface ProxyConfig {
-    /**
-     * Whether GameSpy 4 queries are accepted by the proxy
-     * @return queries enabled
-     */
-    boolean isQueryEnabled();
 
-    /**
+  /**
-     * Get the port GameSpy 4 queries are accepted on
+   * Whether GameSpy 4 queries are accepted by the proxy
-     * @return the query port
+   *
-     */
+   * @return queries enabled
-    int getQueryPort();
+   */
+  boolean isQueryEnabled();
 
-    /**
+  /**
-     * Get the map name reported to GameSpy 4 query services
+   * Get the port GameSpy 4 queries are accepted on
-     * @return the map name
+   *
-     */
+   * @return the query port
-    String getQueryMap();
+   */
+  int getQueryPort();
 
-    /**
+  /**
-     * Whether GameSpy 4 queries should show plugins installed on
+   * Get the map name reported to GameSpy 4 query services
-     * Velocity by default
+   *
-     * @return show plugins in query
+   * @return the map name
-     */
+   */
-    boolean shouldQueryShowPlugins();
+  String getQueryMap();
 
-    /**
+  /**
-     * Get the MOTD component shown in the tab list
+   * Whether GameSpy 4 queries should show plugins installed on Velocity by default
-     * @return the motd component
+   *
-     */
+   * @return show plugins in query
-    Component getMotdComponent();
+   */
+  boolean shouldQueryShowPlugins();
 
-    /**
+  /**
-     * Get the maximum players shown in the tab list
+   * Get the MOTD component shown in the tab list
-     * @return max players
+   *
-     */
+   * @return the motd component
-    int getShowMaxPlayers();
+   */
+  Component getMotdComponent();
 
-    /**
+  /**
-     * Get whether the proxy is online mode. This determines if players are authenticated with Mojang servers.
+   * Get the maximum players shown in the tab list
-     * @return online mode enabled
+   *
-     */
+   * @return max players
-    boolean isOnlineMode();
+   */
+  int getShowMaxPlayers();
 
-    /**
+  /**
-     * Get a Map of all servers registered on this proxy
+   * Get whether the proxy is online mode. This determines if players are authenticated with Mojang
-     * @return registered servers map
+   * servers.
-     */
+   *
-    Map<String, String> getServers();
+   * @return online mode enabled
+   */
+  boolean isOnlineMode();
 
-    /**
+  /**
-     * Get the order of servers that players will be connected to
+   * Get a Map of all servers registered on this proxy
-     * @return connection order list
+   *
-     */
+   * @return registered servers map
-    List<String> getAttemptConnectionOrder();
+   */
+  Map<String, String> getServers();
 
-    /**
+  /**
-     * Get forced servers mapped to given virtual host
+   * Get the order of servers that players will be connected to
-     * @return list of server names
+   *
-     */
+   * @return connection order list
-    Map<String, List<String>> getForcedHosts();
+   */
+  List<String> getAttemptConnectionOrder();
 
-    /**
+  /**
-     * Get the minimum compression threshold for packets
+   * Get forced servers mapped to given virtual host
-     * @return the compression threshold
+   *
-     */
+   * @return list of server names
-    int getCompressionThreshold();
+   */
+  Map<String, List<String>> getForcedHosts();
 
-    /**
+  /**
-     * Get the level of compression that packets will be compressed to
+   * Get the minimum compression threshold for packets
-     * @return the compression level
+   *
-     */
+   * @return the compression threshold
-    int getCompressionLevel();
+   */
+  int getCompressionThreshold();
 
-    /**
+  /**
-     * Get the limit for how long a player must wait to log back in
+   * Get the level of compression that packets will be compressed to
-     * @return the login rate limit (in milliseconds)
+   *
-     */
+   * @return the compression level
-    int getLoginRatelimit();
+   */
+  int getCompressionLevel();
 
-    /**
+  /**
-     * Get the proxy favicon shown in the tablist
+   * Get the limit for how long a player must wait to log back in
-     * @return optional favicon
+   *
-     */
+   * @return the login rate limit (in milliseconds)
-    Optional<Favicon> getFavicon();
+   */
+  int getLoginRatelimit();
 
-    /**
+  /**
-     * Get whether this proxy displays that it supports Forge/FML
+   * Get the proxy favicon shown in the tablist
-     * @return forge announce enabled
+   *
-     */
+   * @return optional favicon
-    boolean isAnnounceForge();
+   */
+  Optional<Favicon> getFavicon();
 
-    /**
+  /**
-     * Get how long this proxy will wait until performing a read timeout
+   * Get whether this proxy displays that it supports Forge/FML
-     * @return connection timeout (in milliseconds)
+   *
-     */
+   * @return forge announce enabled
-    int getConnectTimeout();
+   */
+  boolean isAnnounceForge();
 
-    /**
+  /**
-     * Get how long this proxy will wait until performing a read timeout
+   * Get how long this proxy will wait until performing a read timeout
-     * @return read timeout (in milliseconds)
+   *
-     */
+   * @return connection timeout (in milliseconds)
-    int getReadTimeout();
+   */
+  int getConnectTimeout();
+
+  /**
+   * Get how long this proxy will wait until performing a read timeout
+   *
+   * @return read timeout (in milliseconds)
+   */
+  int getReadTimeout();
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelIdentifier.java

@@ -4,9 +4,11 @@ package com.velocitypowered.api.proxy.messages;
  * Represents a kind of channel identifier.
  */
 public interface ChannelIdentifier {
-    /**
+
-     * Returns the textual representation of this identifier.
+  /**
-     * @return the textual representation of the identifier
+   * Returns the textual representation of this identifier.
-     */
+   *
-    String getId();
+   * @return the textual representation of the identifier
+   */
+  String getId();
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSink.java

@@ -4,11 +4,13 @@ package com.velocitypowered.api.proxy.messages;
  * Represents something that can send plugin messages.
  */
 public interface ChannelMessageSink {
-    /**
+
-     * Sends a plugin message to this target.
+  /**
-     * @param identifier the channel identifier to send the message on
+   * Sends a plugin message to this target.
-     * @param data the data to send
+   *
-     * @return whether or not the message could be sent
+   * @param identifier the channel identifier to send the message on
-     */
+   * @param data the data to send
-    boolean sendPluginMessage(ChannelIdentifier identifier, byte[] data);
+   * @return whether or not the message could be sent
+   */
+  boolean sendPluginMessage(ChannelIdentifier identifier, byte[] data);
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelMessageSource.java

@@ -4,4 +4,5 @@ package com.velocitypowered.api.proxy.messages;
  * A marker interface that indicates a source of plugin messages.
  */
 public interface ChannelMessageSource {
+
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/ChannelRegistrar.java

@@ -1,18 +1,22 @@
 package com.velocitypowered.api.proxy.messages;
 
 /**
- * Represents an interface to register and unregister {@link ChannelIdentifier}s for the proxy to listen on.
+ * Represents an interface to register and unregister {@link ChannelIdentifier}s for the proxy to
+ * listen on.
  */
 public interface ChannelRegistrar {
-    /**
-     * Registers the specified message identifiers to listen on for the
-     * @param identifiers the channel identifiers to register
-     */
-    void register(ChannelIdentifier... identifiers);
 
-    /**
+  /**
-     * Unregisters the handler for the specified channel.
+   * Registers the specified message identifiers to listen on for the
-     * @param identifiers the identifiers to unregister
+   *
-     */
+   * @param identifiers the channel identifiers to register
-    void unregister(ChannelIdentifier... identifiers);
+   */
+  void register(ChannelIdentifier... identifiers);
+
+  /**
+   * Unregisters the handler for the specified channel.
+   *
+   * @param identifiers the identifiers to unregister
+   */
+  void unregister(ChannelIdentifier... identifiers);
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/LegacyChannelIdentifier.java

@@ -2,46 +2,51 @@ package com.velocitypowered.api.proxy.messages;
 
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
+import java.util.Objects;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.Objects;
-
 /**
- * Reperesents a legacy channel identifier (for Minecraft 1.12 and below). For modern 1.13 plugin messages, please see
+ * Reperesents a legacy channel identifier (for Minecraft 1.12 and below). For modern 1.13 plugin
- * {@link MinecraftChannelIdentifier}. This class is immutable and safe for multi-threaded use.
+ * messages, please see {@link MinecraftChannelIdentifier}. This class is immutable and safe for
+ * multi-threaded use.
  */
 public final class LegacyChannelIdentifier implements ChannelIdentifier {
-    private final String name;
 
-    public LegacyChannelIdentifier(String name) {
+  private final String name;
-        Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "provided name is empty");
-        this.name = name;
-    }
 
-    public String getName() {
+  public LegacyChannelIdentifier(String name) {
-        return name;
+    Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "provided name is empty");
-    }
+    this.name = name;
+  }
 
-    @Override
+  public String getName() {
-    public String toString() {
+    return name;
-        return name + " (legacy)";
+  }
-    }
 
-    @Override
+  @Override
-    public boolean equals(@Nullable Object o) {
+  public String toString() {
-        if (this == o) return true;
+    return name + " (legacy)";
-        if (o == null || getClass() != o.getClass()) return false;
+  }
-        LegacyChannelIdentifier that = (LegacyChannelIdentifier) o;
-        return Objects.equals(name, that.name);
-    }
 
-    @Override
+  @Override
-    public int hashCode() {
+  public boolean equals(@Nullable Object o) {
-        return Objects.hash(name);
+    if (this == o) {
+      return true;
     }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    LegacyChannelIdentifier that = (LegacyChannelIdentifier) o;
+    return Objects.equals(name, that.name);
+  }
 
-    @Override
+  @Override
-    public String getId() {
+  public int hashCode() {
-        return this.getName();
+    return Objects.hash(name);
-    }
+  }
+
+  @Override
+  public String getId() {
+    return this.getName();
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/MinecraftChannelIdentifier.java

@@ -2,78 +2,87 @@ package com.velocitypowered.api.proxy.messages;
 
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Objects;
 import java.util.regex.Pattern;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
- * Represents a Minecraft 1.13+ channel identifier. This class is immutable and safe for multi-threaded use.
+ * Represents a Minecraft 1.13+ channel identifier. This class is immutable and safe for
+ * multi-threaded use.
  */
 public final class MinecraftChannelIdentifier implements ChannelIdentifier {
-    private static final Pattern VALID_IDENTIFIER_REGEX = Pattern.compile("[a-z0-9\\-_]+");
 
-    private final String namespace;
+  private static final Pattern VALID_IDENTIFIER_REGEX = Pattern.compile("[a-z0-9\\-_]+");
-    private final String name;
 
-    private MinecraftChannelIdentifier(String namespace, String name) {
+  private final String namespace;
-        this.namespace = namespace;
+  private final String name;
-        this.name = name;
+
+  private MinecraftChannelIdentifier(String namespace, String name) {
+    this.namespace = namespace;
+    this.name = name;
+  }
+
+  /**
+   * Creates an identifier in the default namespace ({@code minecraft}). Plugins are strongly
+   * encouraged to provide their own namespace.
+   *
+   * @param name the name in the default namespace to use
+   * @return a new channel identifier
+   */
+  public static MinecraftChannelIdentifier forDefaultNamespace(String name) {
+    return new MinecraftChannelIdentifier("minecraft", name);
+  }
+
+  /**
+   * Creates an identifier in the specified namespace.
+   *
+   * @param namespace the namespace to use
+   * @param name the channel name inside the specified namespace
+   * @return a new channel identifier
+   */
+  public static MinecraftChannelIdentifier create(String namespace, String name) {
+    Preconditions.checkArgument(!Strings.isNullOrEmpty(namespace), "namespace is null or empty");
+    Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "namespace is null or empty");
+    Preconditions.checkArgument(VALID_IDENTIFIER_REGEX.matcher(namespace).matches(),
+        "namespace is not valid");
+    Preconditions
+        .checkArgument(VALID_IDENTIFIER_REGEX.matcher(name).matches(), "name is not valid");
+    return new MinecraftChannelIdentifier(namespace, name);
+  }
+
+  public String getNamespace() {
+    return namespace;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  @Override
+  public String toString() {
+    return namespace + ":" + name + " (modern)";
+  }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
     }
-
+    if (o == null || getClass() != o.getClass()) {
-    /**
+      return false;
-     * Creates an identifier in the default namespace ({@code minecraft}). Plugins are strongly encouraged to provide
-     * their own namespace.
-     * @param name the name in the default namespace to use
-     * @return a new channel identifier
-     */
-    public static MinecraftChannelIdentifier forDefaultNamespace(String name) {
-        return new MinecraftChannelIdentifier("minecraft", name);
     }
+    MinecraftChannelIdentifier that = (MinecraftChannelIdentifier) o;
+    return Objects.equals(namespace, that.namespace) &&
+        Objects.equals(name, that.name);
+  }
 
-    /**
+  @Override
-     * Creates an identifier in the specified namespace.
+  public int hashCode() {
-     * @param namespace the namespace to use
+    return Objects.hash(namespace, name);
-     * @param name the channel name inside the specified namespace
+  }
-     * @return a new channel identifier
-     */
-    public static MinecraftChannelIdentifier create(String namespace, String name) {
-        Preconditions.checkArgument(!Strings.isNullOrEmpty(namespace), "namespace is null or empty");
-        Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "namespace is null or empty");
-        Preconditions.checkArgument(VALID_IDENTIFIER_REGEX.matcher(namespace).matches(), "namespace is not valid");
-        Preconditions.checkArgument(VALID_IDENTIFIER_REGEX.matcher(name).matches(), "name is not valid");
-        return new MinecraftChannelIdentifier(namespace, name);
-    }
 
-    public String getNamespace() {
+  @Override
-        return namespace;
+  public String getId() {
-    }
+    return namespace + ":" + name;
-
+  }
-    public String getName() {
-        return name;
-    }
-
-    @Override
-    public String toString() {
-        return namespace + ":" + name + " (modern)";
-    }
-
-    @Override
-    public boolean equals(@Nullable Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        MinecraftChannelIdentifier that = (MinecraftChannelIdentifier) o;
-        return Objects.equals(namespace, that.namespace) &&
-                Objects.equals(name, that.name);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(namespace, name);
-    }
-
-    @Override
-    public String getId() {
-        return namespace + ":" + name;
-    }
 }

api/src/main/java/com/velocitypowered/api/proxy/messages/package-info.java

@@ -1,4 +1,5 @@
 /**
- * Provides an interface to receive, handle, and send plugin messages on the proxy from clients and servers.
+ * Provides an interface to receive, handle, and send plugin messages on the proxy from clients and
+ * servers.
  */
 package com.velocitypowered.api.proxy.messages;

api/src/main/java/com/velocitypowered/api/proxy/player/PlayerSettings.java

@@ -6,51 +6,58 @@ import java.util.Locale;
  * Represents the client settings for the player.
  */
 public interface PlayerSettings {
-    /**
-     * Returns the locale of the Minecraft client.
-     * @return the client locale
-     */
-    Locale getLocale();
 
-    /**
+  /**
-     * Returns the client's view distance. This does not guarantee the client will see this many chunks, since your
+   * Returns the locale of the Minecraft client.
-     * servers are responsible for sending the chunks.
+   *
-     * @return the client view distance
+   * @return the client locale
-     */
+   */
-    byte getViewDistance();
+  Locale getLocale();
 
-    /**
+  /**
-     * Returns the chat setting for the client.
+   * Returns the client's view distance. This does not guarantee the client will see this many
-     * @return the chat setting
+   * chunks, since your servers are responsible for sending the chunks.
-     */
+   *
-    ChatMode getChatMode();
+   * @return the client view distance
+   */
+  byte getViewDistance();
 
-    /**
+  /**
-     * Returns whether or not the client has chat colors disabled.
+   * Returns the chat setting for the client.
-     * @return whether or not the client has chat colors disabled
+   *
-     */
+   * @return the chat setting
-    boolean hasChatColors();
+   */
+  ChatMode getChatMode();
 
-    /**
+  /**
-     * Returns the parts of player skins the client will show.
+   * Returns whether or not the client has chat colors disabled.
-     * @return the skin parts for the client
+   *
-     */
+   * @return whether or not the client has chat colors disabled
-    SkinParts getSkinParts();
+   */
+  boolean hasChatColors();
 
-    /**
+  /**
-     * Returns the primary hand of the client.
+   * Returns the parts of player skins the client will show.
-     * @return the primary hand of the client
+   *
-     */
+   * @return the skin parts for the client
-    MainHand getMainHand();
+   */
+  SkinParts getSkinParts();
 
-    enum ChatMode {
+  /**
-        SHOWN,
+   * Returns the primary hand of the client.
-        COMMANDS_ONLY,
+   *
-        HIDDEN
+   * @return the primary hand of the client
-    }
+   */
+  MainHand getMainHand();
 
-    enum MainHand {
+  enum ChatMode {
-        LEFT,
+    SHOWN,
-        RIGHT
+    COMMANDS_ONLY,
-    }
+    HIDDEN
+  }
+
+  enum MainHand {
+    LEFT,
+    RIGHT
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/player/SkinParts.java

@@ -1,37 +1,38 @@
 package com.velocitypowered.api.proxy.player;
 
 public final class SkinParts {
-    private final byte bitmask;
 
-    public SkinParts(byte skinBitmask) {
+  private final byte bitmask;
-        this.bitmask = skinBitmask;
-    }
 
-    public boolean hasCape() {
+  public SkinParts(byte skinBitmask) {
-        return (bitmask & 1) == 1;
+    this.bitmask = skinBitmask;
-    }
+  }
 
-    public boolean hasJacket() {
+  public boolean hasCape() {
-        return ((bitmask >> 1) & 1) == 1;
+    return (bitmask & 1) == 1;
-    }
+  }
 
-    public boolean hasLeftSleeve() {
+  public boolean hasJacket() {
-        return ((bitmask >> 2) & 1) == 1;
+    return ((bitmask >> 1) & 1) == 1;
-    }
+  }
 
-    public boolean hasRightSleeve() {
+  public boolean hasLeftSleeve() {
-        return ((bitmask >> 3) & 1) == 1;
+    return ((bitmask >> 2) & 1) == 1;
-    }
+  }
 
-    public boolean hasLeftPants() {
+  public boolean hasRightSleeve() {
-        return ((bitmask >> 4) & 1) == 1;
+    return ((bitmask >> 3) & 1) == 1;
-    }
+  }
 
-    public boolean hasRightPants() {
+  public boolean hasLeftPants() {
-        return ((bitmask >> 5) & 1) == 1;
+    return ((bitmask >> 4) & 1) == 1;
-    }
+  }
 
-    public boolean hasHat() {
+  public boolean hasRightPants() {
-        return ((bitmask >> 6) & 1) == 1;
+    return ((bitmask >> 5) & 1) == 1;
-    }
+  }
+
+  public boolean hasHat() {
+    return ((bitmask >> 6) & 1) == 1;
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/player/TabList.java

@@ -2,51 +2,56 @@ package com.velocitypowered.api.proxy.player;
 
 import com.velocitypowered.api.proxy.Player;
 import com.velocitypowered.api.util.GameProfile;
-import net.kyori.text.Component;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Collection;
 import java.util.Optional;
 import java.util.UUID;
+import net.kyori.text.Component;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * Represents the tab list of a {@link Player}.
  */
 public interface TabList {
-    /**
-     * Sets the tab list header and footer for the player.
-     * @param header the header component
-     * @param footer the footer component
-     */
-    void setHeaderAndFooter(Component header, Component footer);
 
-    /**
+  /**
-     * Clears the tab list header and footer for the player.
+   * Sets the tab list header and footer for the player.
-     */
+   *
-    void clearHeaderAndFooter();
+   * @param header the header component
+   * @param footer the footer component
+   */
+  void setHeaderAndFooter(Component header, Component footer);
 
-    /**
+  /**
-     * Adds a {@link TabListEntry} to the {@link Player}'s tab list.
+   * Clears the tab list header and footer for the player.
-     * @param entry to add to the tab list
+   */
-     */
+  void clearHeaderAndFooter();
-    void addEntry(TabListEntry entry);
 
-    /**
+  /**
-     * Removes the {@link TabListEntry} from the tab list with the {@link GameProfile}
+   * Adds a {@link TabListEntry} to the {@link Player}'s tab list.
-     * identified with the specified {@link UUID}.
+   *
-     * @param uuid of the
+   * @param entry to add to the tab list
-     * @return {@link Optional} containing the removed {@link TabListEntry} if present,
+   */
-     * otherwise {@link Optional#empty()}
+  void addEntry(TabListEntry entry);
-     */
-    Optional<TabListEntry> removeEntry(UUID uuid);
 
-    /**
+  /**
-     * Returns an immutable {@link Collection} of the {@link TabListEntry}s in the tab list.
+   * Removes the {@link TabListEntry} from the tab list with the {@link GameProfile} identified with
-     * @return immutable {@link Collection} of tab list entries
+   * the specified {@link UUID}.
-     */
+   *
-    Collection<TabListEntry> getEntries();
+   * @param uuid of the
+   * @return {@link Optional} containing the removed {@link TabListEntry} if present, otherwise
+   * {@link Optional#empty()}
+   */
+  Optional<TabListEntry> removeEntry(UUID uuid);
 
-    // Necessary because the TabListEntry implementation isn't in the api
+  /**
-    @Deprecated
+   * Returns an immutable {@link Collection} of the {@link TabListEntry}s in the tab list.
-    TabListEntry buildEntry(GameProfile profile, @Nullable Component displayName, int latency, int gameMode);
+   *
+   * @return immutable {@link Collection} of tab list entries
+   */
+  Collection<TabListEntry> getEntries();
+
+  // Necessary because the TabListEntry implementation isn't in the api
+  @Deprecated
+  TabListEntry buildEntry(GameProfile profile, @Nullable Component displayName, int latency,
+      int gameMode);
 }

api/src/main/java/com/velocitypowered/api/proxy/player/TabListEntry.java

@@ -1,177 +1,195 @@
 package com.velocitypowered.api.proxy.player;
 
 import com.velocitypowered.api.util.GameProfile;
+import java.util.Optional;
 import net.kyori.text.Component;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.Optional;
-
 /**
  * Represents a single entry in a {@link TabList}.
  */
 public interface TabListEntry {
-    /**
-     * Returns the parent {@link TabList} of this {@code this} {@link TabListEntry}.
-     * @return parent {@link TabList}
-     */
-    TabList getTabList();
 
-    /**
+  /**
-     * Returns the {@link GameProfile} of the entry, which uniquely identifies the entry
+   * Returns the parent {@link TabList} of this {@code this} {@link TabListEntry}.
-     * with the containing {@link java.util.UUID}, as well as deciding what is shown
+   *
-     * as the player head in the tab list.
+   * @return parent {@link TabList}
-     * @return {@link GameProfile} of the entry
+   */
-     */
+  TabList getTabList();
-    GameProfile getProfile();
 
-    /**
+  /**
-     * Returns {@link Optional} text {@link Component}, which if present is the text displayed for
+   * Returns the {@link GameProfile} of the entry, which uniquely identifies the entry with the
-     * {@code this} entry in the {@link TabList}, otherwise {@link GameProfile#getName()} is shown.
+   * containing {@link java.util.UUID}, as well as deciding what is shown as the player head in the
-     * @return {@link Optional} text {@link Component} of name displayed in the tab list
+   * tab list.
-     */
+   *
-    Optional<Component> getDisplayName();
+   * @return {@link GameProfile} of the entry
+   */
+  GameProfile getProfile();
 
-    /**
+  /**
-     * Sets the text {@link Component} to be displayed for {@code this} {@link TabListEntry}.
+   * Returns {@link Optional} text {@link Component}, which if present is the text displayed for
-     * If {@code null}, {@link GameProfile#getName()} will be shown.
+   * {@code this} entry in the {@link TabList}, otherwise {@link GameProfile#getName()} is shown.
-     * @param displayName to show in the {@link TabList} for {@code this} entry
+   *
-     * @return {@code this}, for chaining
+   * @return {@link Optional} text {@link Component} of name displayed in the tab list
-     */
+   */
-    TabListEntry setDisplayName(@Nullable Component displayName);
+  Optional<Component> getDisplayName();
 
-    /**
+  /**
-     * Returns the latency for {@code this} entry.
+   * Sets the text {@link Component} to be displayed for {@code this} {@link TabListEntry}. If
-     * <p>The icon shown in the tab list is calculated by the latency in the following way:<p>
+   * {@code null}, {@link GameProfile#getName()} will be shown.
-     * <ul>
+   *
-     *     <li>A negative latency will display the no connection icon</li>
+   * @param displayName to show in the {@link TabList} for {@code this} entry
-     *     <li>0-150 will display 5 bars</li>
+   * @return {@code this}, for chaining
-     *     <li>150-300 will display 4 bars</li>
+   */
-     *     <li>300-600 will display 3 bars</li>
+  TabListEntry setDisplayName(@Nullable Component displayName);
-     *     <li>600-1000 will display 2 bars</li>
-     *     <li>A latency move than 1 second will display 1 bar</li>
-     *     <li></li>
-     * </ul>
-     * @return latency set for {@code this} entry
-     */
-    int getLatency();
 
-    /**
+  /**
-     * Sets the latency for {@code this} entry to the specified value
+   * Returns the latency for {@code this} entry.
-     * @see #getLatency()
+   * <p>The icon shown in the tab list is calculated by the latency in the following way:<p>
-     * @param latency to changed to
+   * <ul>
-     * @return {@code this}, for chaining
+   * <li>A negative latency will display the no connection icon</li>
-     */
+   * <li>0-150 will display 5 bars</li>
-    TabListEntry setLatency(int latency);
+   * <li>150-300 will display 4 bars</li>
+   * <li>300-600 will display 3 bars</li>
+   * <li>600-1000 will display 2 bars</li>
+   * <li>A latency move than 1 second will display 1 bar</li>
+   * <li></li>
+   * </ul>
+   *
+   * @return latency set for {@code this} entry
+   */
+  int getLatency();
 
-    /**
+  /**
-     * Gets the game mode {@code this} entry has been set to.
+   * Sets the latency for {@code this} entry to the specified value
-     * <p>The number corresponds to the game mode in the following way:</p>
+   *
-     * <ol start="0">
+   * @param latency to changed to
-     *     <li>Survival</li>
+   * @return {@code this}, for chaining
-     *     <li>Creative</li>
+   * @see #getLatency()
-     *     <li>Adventure</li>
+   */
-     *     <li>Spectator</li>
+  TabListEntry setLatency(int latency);
-     * </ol>
-     * @return the game mode
-     */
-    int getGameMode();
 
-    /**
+  /**
-     * Sets the game mode for {@code this} entry to the specified value
+   * Gets the game mode {@code this} entry has been set to.
-     * @see #getGameMode()
+   * <p>The number corresponds to the game mode in the following way:</p>
-     * @param gameMode to change to
+   * <ol start="0">
-     * @return {@code this}, for chaining
+   * <li>Survival</li>
-     */
+   * <li>Creative</li>
-    TabListEntry setGameMode(int gameMode);
+   * <li>Adventure</li>
+   * <li>Spectator</li>
+   * </ol>
+   *
+   * @return the game mode
+   */
+  int getGameMode();
 
-    /**
+  /**
-     * Returns a {@link Builder} to create a {@link TabListEntry}.
+   * Sets the game mode for {@code this} entry to the specified value
-     * @return {@link TabListEntry} builder
+   *
-     */
+   * @param gameMode to change to
-    static Builder builder() {
+   * @return {@code this}, for chaining
-        return new Builder();
+   * @see #getGameMode()
+   */
+  TabListEntry setGameMode(int gameMode);
+
+  /**
+   * Returns a {@link Builder} to create a {@link TabListEntry}.
+   *
+   * @return {@link TabListEntry} builder
+   */
+  static Builder builder() {
+    return new Builder();
+  }
+
+  /**
+   * Represents a builder which creates {@link TabListEntry}s.
+   *
+   * @see TabListEntry
+   */
+  class Builder {
+
+    private @Nullable TabList tabList;
+    private @Nullable GameProfile profile;
+    private @Nullable Component displayName;
+    private int latency = 0;
+    private int gameMode = 0;
+
+    private Builder() {
     }
 
     /**
-     * Represents a builder which creates {@link TabListEntry}s.
+     * Sets the parent {@link TabList} for this entry, the entry will only be able to be added to
-     * @see TabListEntry
+     * that specific {@link TabList}.
+     *
+     * @param tabList to set
+     * @return {@code this}, for chaining
      */
-    class Builder {
+    public Builder tabList(TabList tabList) {
-        private @Nullable TabList tabList;
+      this.tabList = tabList;
-        private @Nullable GameProfile profile;
+      return this;
-        private @Nullable Component displayName;
-        private int latency = 0;
-        private int gameMode = 0;
-
-        private Builder() {}
-    
-        /**
-         * Sets the parent {@link TabList} for this entry,
-         * the entry will only be able to be added to that specific {@link TabList}.
-         * @param tabList to set
-         * @return {@code this}, for chaining
-         */
-        public Builder tabList(TabList tabList) {
-            this.tabList = tabList;
-            return this;
-        }
-    
-        /**
-         * Sets the {@link GameProfile} of the {@link TabListEntry}.
-         * @see TabListEntry#getProfile()
-         * @param profile to set
-         * @return {@code this}, for chaining
-         */
-        public Builder profile(GameProfile profile) {
-            this.profile = profile;
-            return this;
-        }
-    
-        /**
-         * Sets the displayed name of the {@link TabListEntry}
-         * @see TabListEntry#getDisplayName()
-         * @param displayName to set
-         * @return {@code this}, for chaining
-         */
-        public Builder displayName(@Nullable Component displayName) {
-            this.displayName = displayName;
-            return this;
-        }
-    
-        /**
-         * Sets the latency of the {@link TabListEntry}
-         * @see TabListEntry#getLatency()
-         * @param latency to set
-         * @return {@code this}, for chaining
-         */
-        public Builder latency(int latency) {
-            this.latency = latency;
-            return this;
-        }
-    
-        /**
-         * Sets the game mode of the {@link TabListEntry}
-         * @see TabListEntry#getGameMode()
-         * @param gameMode to set
-         * @return {@code this}, for chaining
-         */
-        public Builder gameMode(int gameMode) {
-            this.gameMode = gameMode;
-            return this;
-        }
-    
-        /**
-         * Constructs the {@link TabListEntry} specified by {@code this} {@link Builder}.
-         * @return the constructed {@link TabListEntry}
-         */
-        public TabListEntry build() {
-            if (tabList == null) {
-                throw new IllegalStateException("The Tablist must be set when building a TabListEntry");
-            }
-            if (profile == null) {
-                throw new IllegalStateException("The GameProfile must be set when building a TabListEntry");
-            }
-            return tabList.buildEntry(profile, displayName, latency, gameMode);
-        }
     }
+
+    /**
+     * Sets the {@link GameProfile} of the {@link TabListEntry}.
+     *
+     * @param profile to set
+     * @return {@code this}, for chaining
+     * @see TabListEntry#getProfile()
+     */
+    public Builder profile(GameProfile profile) {
+      this.profile = profile;
+      return this;
+    }
+
+    /**
+     * Sets the displayed name of the {@link TabListEntry}
+     *
+     * @param displayName to set
+     * @return {@code this}, for chaining
+     * @see TabListEntry#getDisplayName()
+     */
+    public Builder displayName(@Nullable Component displayName) {
+      this.displayName = displayName;
+      return this;
+    }
+
+    /**
+     * Sets the latency of the {@link TabListEntry}
+     *
+     * @param latency to set
+     * @return {@code this}, for chaining
+     * @see TabListEntry#getLatency()
+     */
+    public Builder latency(int latency) {
+      this.latency = latency;
+      return this;
+    }
+
+    /**
+     * Sets the game mode of the {@link TabListEntry}
+     *
+     * @param gameMode to set
+     * @return {@code this}, for chaining
+     * @see TabListEntry#getGameMode()
+     */
+    public Builder gameMode(int gameMode) {
+      this.gameMode = gameMode;
+      return this;
+    }
+
+    /**
+     * Constructs the {@link TabListEntry} specified by {@code this} {@link Builder}.
+     *
+     * @return the constructed {@link TabListEntry}
+     */
+    public TabListEntry build() {
+      if (tabList == null) {
+        throw new IllegalStateException("The Tablist must be set when building a TabListEntry");
+      }
+      if (profile == null) {
+        throw new IllegalStateException("The GameProfile must be set when building a TabListEntry");
+      }
+      return tabList.buildEntry(profile, displayName, latency, gameMode);
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/server/QueryResponse.java

@@ -3,301 +3,323 @@ package com.velocitypowered.api.proxy.server;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.velocitypowered.api.proxy.config.ProxyConfig;
-import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * GS4 query response. This class is immutable.
  */
 public final class QueryResponse {
-    private final String hostname;
-    private final String gameVersion;
-    private final String map;
-    private final int currentPlayers;
-    private final int maxPlayers;
-    private final String proxyHost;
-    private final int proxyPort;
-    private final Collection<String> players;
-    private final String proxyVersion;
-    private final Collection<PluginInformation> plugins;
 
-    private QueryResponse(String hostname, String gameVersion, String map, int currentPlayers, int maxPlayers, String proxyHost, int proxyPort, Collection<String> players, String proxyVersion, Collection<PluginInformation> plugins) {
+  private final String hostname;
-        this.hostname = hostname;
+  private final String gameVersion;
-        this.gameVersion = gameVersion;
+  private final String map;
-        this.map = map;
+  private final int currentPlayers;
-        this.currentPlayers = currentPlayers;
+  private final int maxPlayers;
-        this.maxPlayers = maxPlayers;
+  private final String proxyHost;
-        this.proxyHost = proxyHost;
+  private final int proxyPort;
-        this.proxyPort = proxyPort;
+  private final Collection<String> players;
-        this.players = players;
+  private final String proxyVersion;
-        this.proxyVersion = proxyVersion;
+  private final Collection<PluginInformation> plugins;
-        this.plugins = plugins;
+
+  private QueryResponse(String hostname, String gameVersion, String map, int currentPlayers,
+      int maxPlayers, String proxyHost, int proxyPort, Collection<String> players,
+      String proxyVersion, Collection<PluginInformation> plugins) {
+    this.hostname = hostname;
+    this.gameVersion = gameVersion;
+    this.map = map;
+    this.currentPlayers = currentPlayers;
+    this.maxPlayers = maxPlayers;
+    this.proxyHost = proxyHost;
+    this.proxyPort = proxyPort;
+    this.players = players;
+    this.proxyVersion = proxyVersion;
+    this.plugins = plugins;
+  }
+
+  /**
+   * Get hostname which will be used to reply to the query. By default it is {@link
+   * ProxyConfig#getMotdComponent()} in plain text without colour codes.
+   *
+   * @return hostname
+   */
+  public String getHostname() {
+    return hostname;
+  }
+
+  /**
+   * Get game version which will be used to reply to the query. By default supported Minecraft
+   * versions range is sent.
+   *
+   * @return game version
+   */
+  public String getGameVersion() {
+    return gameVersion;
+  }
+
+  /**
+   * Get map name which will be used to reply to the query. By default {@link
+   * ProxyConfig#getQueryMap()} is sent.
+   *
+   * @return map name
+   */
+  public String getMap() {
+    return map;
+  }
+
+  /**
+   * Get current online player count which will be used to reply to the query.
+   *
+   * @return online player count
+   */
+  public int getCurrentPlayers() {
+    return currentPlayers;
+  }
+
+  /**
+   * Get max player count which will be used to reply to the query.
+   *
+   * @return max player count
+   */
+  public int getMaxPlayers() {
+    return maxPlayers;
+  }
+
+  /**
+   * Get proxy (public facing) hostname
+   *
+   * @return proxy hostname
+   */
+  public String getProxyHost() {
+    return proxyHost;
+  }
+
+  /**
+   * Get proxy (public facing) port
+   *
+   * @return proxy port
+   */
+  public int getProxyPort() {
+    return proxyPort;
+  }
+
+  /**
+   * Get collection of players which will be used to reply to the query.
+   *
+   * @return collection of players
+   */
+  public Collection<String> getPlayers() {
+    return players;
+  }
+
+  /**
+   * Get server software (name and version) which will be used to reply to the query.
+   *
+   * @return server software
+   */
+  public String getProxyVersion() {
+    return proxyVersion;
+  }
+
+  /**
+   * Get list of plugins which will be used to reply to the query.
+   *
+   * @return collection of plugins
+   */
+  public Collection<PluginInformation> getPlugins() {
+    return plugins;
+  }
+
+
+  /**
+   * Creates a new {@link Builder} instance from data represented by this response
+   *
+   * @return {@link QueryResponse} builder
+   */
+  public Builder toBuilder() {
+    return QueryResponse.builder()
+        .hostname(getHostname())
+        .gameVersion(getGameVersion())
+        .map(getMap())
+        .currentPlayers(getCurrentPlayers())
+        .maxPlayers(getMaxPlayers())
+        .proxyHost(getProxyHost())
+        .proxyPort(getProxyPort())
+        .players(getPlayers())
+        .proxyVersion(getProxyVersion())
+        .plugins(getPlugins());
+  }
+
+  /**
+   * Creates a new {@link Builder} instance
+   *
+   * @return {@link QueryResponse} builder
+   */
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  /**
+   * A builder for {@link QueryResponse} objects.
+   */
+  public static final class Builder {
+
+    @MonotonicNonNull
+    private String hostname;
+
+    @MonotonicNonNull
+    private String gameVersion;
+
+    @MonotonicNonNull
+    private String map;
+
+    @MonotonicNonNull
+    private String proxyHost;
+
+    @MonotonicNonNull
+    private String proxyVersion;
+
+    private int currentPlayers;
+    private int maxPlayers;
+    private int proxyPort;
+
+    private List<String> players = new ArrayList<>();
+    private List<PluginInformation> plugins = new ArrayList<>();
+
+    private Builder() {
+    }
+
+    public Builder hostname(String hostname) {
+      this.hostname = Preconditions.checkNotNull(hostname, "hostname");
+      return this;
+    }
+
+    public Builder gameVersion(String gameVersion) {
+      this.gameVersion = Preconditions.checkNotNull(gameVersion, "gameVersion");
+      return this;
+    }
+
+    public Builder map(String map) {
+      this.map = Preconditions.checkNotNull(map, "map");
+      return this;
+    }
+
+    public Builder currentPlayers(int currentPlayers) {
+      Preconditions.checkArgument(currentPlayers >= 0, "currentPlayers cannot be negative");
+      this.currentPlayers = currentPlayers;
+      return this;
+    }
+
+    public Builder maxPlayers(int maxPlayers) {
+      Preconditions.checkArgument(maxPlayers >= 0, "maxPlayers cannot be negative");
+      this.maxPlayers = maxPlayers;
+      return this;
+    }
+
+    public Builder proxyHost(String proxyHost) {
+      this.proxyHost = Preconditions.checkNotNull(proxyHost, "proxyHost");
+      return this;
+    }
+
+    public Builder proxyPort(int proxyPort) {
+      Preconditions
+          .checkArgument(proxyPort >= 1 && proxyPort <= 65535, "proxyPort must be between 1-65535");
+      this.proxyPort = proxyPort;
+      return this;
+    }
+
+    public Builder players(Collection<String> players) {
+      this.players.addAll(Preconditions.checkNotNull(players, "players"));
+      return this;
+    }
+
+    public Builder players(String... players) {
+      this.players.addAll(Arrays.asList(Preconditions.checkNotNull(players, "players")));
+      return this;
+    }
+
+    public Builder clearPlayers() {
+      this.players.clear();
+      return this;
+    }
+
+    public Builder proxyVersion(String proxyVersion) {
+      this.proxyVersion = Preconditions.checkNotNull(proxyVersion, "proxyVersion");
+      return this;
+    }
+
+    public Builder plugins(Collection<PluginInformation> plugins) {
+      this.plugins.addAll(Preconditions.checkNotNull(plugins, "plugins"));
+      return this;
+    }
+
+    public Builder plugins(PluginInformation... plugins) {
+      this.plugins.addAll(Arrays.asList(Preconditions.checkNotNull(plugins, "plugins")));
+      return this;
+    }
+
+    public Builder clearPlugins() {
+      this.plugins.clear();
+      return this;
     }
 
     /**
-     * Get hostname which will be used to reply to the query. By default it is {@link ProxyConfig#getMotdComponent()} in plain text without colour codes.
+     * Builds new {@link QueryResponse} with supplied data
-     * @return hostname
+     *
+     * @return response
      */
-    public String getHostname() {
+    public QueryResponse build() {
-        return hostname;
+      return new QueryResponse(
+          Preconditions.checkNotNull(hostname, "hostname"),
+          Preconditions.checkNotNull(gameVersion, "gameVersion"),
+          Preconditions.checkNotNull(map, "map"),
+          currentPlayers,
+          maxPlayers,
+          Preconditions.checkNotNull(proxyHost, "proxyHost"),
+          proxyPort,
+          ImmutableList.copyOf(players),
+          Preconditions.checkNotNull(proxyVersion, "proxyVersion"),
+          ImmutableList.copyOf(plugins)
+      );
+    }
+  }
+
+  /**
+   * Plugin information
+   */
+  public static class PluginInformation {
+
+    private String name;
+    private String version;
+
+    public PluginInformation(String name, String version) {
+      this.name = Preconditions.checkNotNull(name, "name");
+      this.version = Preconditions.checkNotNull(version, "version");
     }
 
-    /**
+    public String getName() {
-     * Get game version which will be used to reply to the query. By default supported Minecraft versions range is sent.
+      return name;
-     * @return game version
-     */
-    public String getGameVersion() {
-        return gameVersion;
     }
 
-    /**
+    public void setName(String name) {
-     * Get map name which will be used to reply to the query. By default {@link ProxyConfig#getQueryMap()} is sent.
+      this.name = name;
-     * @return map name
-     */
-    public String getMap() {
-        return map;
     }
 
-    /**
+    public void setVersion(@Nullable String version) {
-     * Get current online player count which will be used to reply to the query.
+      this.version = version;
-     * @return online player count
-     */
-    public int getCurrentPlayers() {
-        return currentPlayers;
     }
 
-    /**
+    @Nullable
-     * Get max player count which will be used to reply to the query.
+    public String getVersion() {
-     * @return max player count
+      return version;
-     */
-    public int getMaxPlayers() {
-        return maxPlayers;
     }
 
-    /**
+    public static PluginInformation of(String name, @Nullable String version) {
-     * Get proxy (public facing) hostname
+      return new PluginInformation(name, version);
-     * @return proxy hostname
-     */
-    public String getProxyHost() {
-        return proxyHost;
-    }
-
-    /**
-     * Get proxy (public facing) port
-     * @return proxy port
-     */
-    public int getProxyPort() {
-        return proxyPort;
-    }
-
-    /**
-     * Get collection of players which will be used to reply to the query.
-     * @return collection of players
-     */
-    public Collection<String> getPlayers() {
-        return players;
-    }
-
-    /**
-     * Get server software (name and version) which will be used to reply to the query.
-     * @return server software
-     */
-    public String getProxyVersion() {
-        return proxyVersion;
-    }
-
-    /**
-     * Get list of plugins which will be used to reply to the query.
-     * @return collection of plugins
-     */
-    public Collection<PluginInformation> getPlugins() {
-        return plugins;
-    }
-
-
-    /**
-     * Creates a new {@link Builder} instance from data represented by this response
-     * @return {@link QueryResponse} builder
-     */
-    public Builder toBuilder() {
-        return QueryResponse.builder()
-                .hostname(getHostname())
-                .gameVersion(getGameVersion())
-                .map(getMap())
-                .currentPlayers(getCurrentPlayers())
-                .maxPlayers(getMaxPlayers())
-                .proxyHost(getProxyHost())
-                .proxyPort(getProxyPort())
-                .players(getPlayers())
-                .proxyVersion(getProxyVersion())
-                .plugins(getPlugins());
-    }
-
-    /**
-     * Creates a new {@link Builder} instance
-     * @return {@link QueryResponse} builder
-     */
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    /**
-     * A builder for {@link QueryResponse} objects.
-     */
-    public static final class Builder {
-        @MonotonicNonNull
-        private String hostname;
-
-        @MonotonicNonNull
-        private String gameVersion;
-
-        @MonotonicNonNull
-        private String map;
-
-        @MonotonicNonNull
-        private String proxyHost;
-
-        @MonotonicNonNull
-        private String proxyVersion;
-
-        private int currentPlayers;
-        private int maxPlayers;
-        private int proxyPort;
-
-        private List<String> players = new ArrayList<>();
-        private List<PluginInformation> plugins = new ArrayList<>();
-
-        private Builder() {}
-
-        public Builder hostname(String hostname) {
-            this.hostname = Preconditions.checkNotNull(hostname, "hostname");
-            return this;
-        }
-
-        public Builder gameVersion(String gameVersion) {
-            this.gameVersion = Preconditions.checkNotNull(gameVersion, "gameVersion");
-            return this;
-        }
-
-        public Builder map(String map) {
-            this.map = Preconditions.checkNotNull(map, "map");
-            return this;
-        }
-
-        public Builder currentPlayers(int currentPlayers) {
-            Preconditions.checkArgument(currentPlayers >= 0, "currentPlayers cannot be negative");
-            this.currentPlayers = currentPlayers;
-            return this;
-        }
-
-        public Builder maxPlayers(int maxPlayers) {
-            Preconditions.checkArgument(maxPlayers >= 0, "maxPlayers cannot be negative");
-            this.maxPlayers = maxPlayers;
-            return this;
-        }
-
-        public Builder proxyHost(String proxyHost) {
-            this.proxyHost = Preconditions.checkNotNull(proxyHost, "proxyHost");
-            return this;
-        }
-
-        public Builder proxyPort(int proxyPort) {
-            Preconditions.checkArgument(proxyPort >= 1 && proxyPort <= 65535, "proxyPort must be between 1-65535");
-            this.proxyPort = proxyPort;
-            return this;
-        }
-
-        public Builder players(Collection<String> players) {
-            this.players.addAll(Preconditions.checkNotNull(players, "players"));
-            return this;
-        }
-
-        public Builder players(String... players) {
-            this.players.addAll(Arrays.asList(Preconditions.checkNotNull(players, "players")));
-            return this;
-        }
-
-        public Builder clearPlayers() {
-            this.players.clear();
-            return this;
-        }
-
-        public Builder proxyVersion(String proxyVersion) {
-            this.proxyVersion = Preconditions.checkNotNull(proxyVersion, "proxyVersion");
-            return this;
-        }
-
-        public Builder plugins(Collection<PluginInformation> plugins) {
-            this.plugins.addAll(Preconditions.checkNotNull(plugins, "plugins"));
-            return this;
-        }
-
-        public Builder plugins(PluginInformation... plugins) {
-            this.plugins.addAll(Arrays.asList(Preconditions.checkNotNull(plugins, "plugins")));
-            return this;
-        }
-
-        public Builder clearPlugins() {
-            this.plugins.clear();
-            return this;
-        }
-
-        /**
-         * Builds new {@link QueryResponse} with supplied data
-         * @return response
-         */
-        public QueryResponse build() {
-            return new QueryResponse(
-                    Preconditions.checkNotNull(hostname, "hostname"),
-                    Preconditions.checkNotNull(gameVersion, "gameVersion"),
-                    Preconditions.checkNotNull(map, "map"),
-                    currentPlayers,
-                    maxPlayers,
-                    Preconditions.checkNotNull(proxyHost, "proxyHost"),
-                    proxyPort,
-                    ImmutableList.copyOf(players),
-                    Preconditions.checkNotNull(proxyVersion, "proxyVersion"),
-                    ImmutableList.copyOf(plugins)
-            );
-        }
-    }
-
-    /**
-     * Plugin information
-     */
-    public static class PluginInformation {
-        private String name;
-        private String version;
-
-        public PluginInformation(String name, String version) {
-            this.name = Preconditions.checkNotNull(name, "name");
-            this.version = Preconditions.checkNotNull(version, "version");
-        }
-
-        public String getName() {
-            return name;
-        }
-
-        public void setName(String name) {
-            this.name = name;
-        }
-
-        public void setVersion(@Nullable String version) {
-            this.version = version;
-        }
-
-        @Nullable
-        public String getVersion() {
-            return version;
-        }
-
-        public static PluginInformation of(String name, @Nullable String version) {
-            return new PluginInformation(name, version);
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/server/RegisteredServer.java

@@ -2,7 +2,6 @@ package com.velocitypowered.api.proxy.server;
 
 import com.velocitypowered.api.proxy.Player;
 import com.velocitypowered.api.proxy.messages.ChannelMessageSink;
-
 import java.util.Collection;
 import java.util.concurrent.CompletableFuture;
 
@@ -10,21 +9,25 @@ import java.util.concurrent.CompletableFuture;
  * Represents a server that has been registered with the proxy.
  */
 public interface RegisteredServer extends ChannelMessageSink {
-    /**
-     * Returns the {@link ServerInfo} for this server.
-     * @return the server info
-     */
-    ServerInfo getServerInfo();
 
-    /**
+  /**
-     * Returns a list of all the players currently connected to this server on this proxy.
+   * Returns the {@link ServerInfo} for this server.
-     * @return the players on this proxy
+   *
-     */
+   * @return the server info
-    Collection<Player> getPlayersConnected();
+   */
+  ServerInfo getServerInfo();
 
-    /**
+  /**
-     * Attempts to ping the remote server and return the server list ping result.
+   * Returns a list of all the players currently connected to this server on this proxy.
-     * @return the server ping result from the server
+   *
-     */
+   * @return the players on this proxy
-    CompletableFuture<ServerPing> ping();
+   */
+  Collection<Player> getPlayersConnected();
+
+  /**
+   * Attempts to ping the remote server and return the server list ping result.
+   *
+   * @return the server ping result from the server
+   */
+  CompletableFuture<ServerPing> ping();
 }

api/src/main/java/com/velocitypowered/api/proxy/server/ServerInfo.java

@@ -1,55 +1,61 @@
 package com.velocitypowered.api.proxy.server;
 
 import com.google.common.base.Preconditions;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.net.InetSocketAddress;
 import java.util.Objects;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
- * ServerInfo represents a server that a player can connect to. This object is immutable and safe for concurrent access.
+ * ServerInfo represents a server that a player can connect to. This object is immutable and safe
+ * for concurrent access.
  */
 public final class ServerInfo {
-    private final String name;
-    private final InetSocketAddress address;
 
-    /**
+  private final String name;
-     * Creates a new ServerInfo object.
+  private final InetSocketAddress address;
-     * @param name the name for the server
-     * @param address the address of the server to connect to
-     */
-    public ServerInfo(String name, InetSocketAddress address) {
-        this.name = Preconditions.checkNotNull(name, "name");
-        this.address = Preconditions.checkNotNull(address, "address");
-    }
 
-    public final String getName() {
+  /**
-        return name;
+   * Creates a new ServerInfo object.
-    }
+   *
+   * @param name the name for the server
+   * @param address the address of the server to connect to
+   */
+  public ServerInfo(String name, InetSocketAddress address) {
+    this.name = Preconditions.checkNotNull(name, "name");
+    this.address = Preconditions.checkNotNull(address, "address");
+  }
 
-    public final InetSocketAddress getAddress() {
+  public final String getName() {
-        return address;
+    return name;
-    }
+  }
 
-    @Override
+  public final InetSocketAddress getAddress() {
-    public String toString() {
+    return address;
-        return "ServerInfo{" +
+  }
-                "name='" + name + '\'' +
-                ", address=" + address +
-                '}';
-    }
 
-    @Override
+  @Override
-    public final boolean equals(@Nullable Object o) {
+  public String toString() {
-        if (this == o) return true;
+    return "ServerInfo{" +
-        if (o == null || getClass() != o.getClass()) return false;
+        "name='" + name + '\'' +
-        ServerInfo that = (ServerInfo) o;
+        ", address=" + address +
-        return Objects.equals(name, that.name) &&
+        '}';
-                Objects.equals(address, that.address);
+  }
-    }
 
-    @Override
+  @Override
-    public final int hashCode() {
+  public final boolean equals(@Nullable Object o) {
-        return Objects.hash(name, address);
+    if (this == o) {
+      return true;
     }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ServerInfo that = (ServerInfo) o;
+    return Objects.equals(name, that.name) &&
+        Objects.equals(address, that.address);
+  }
+
+  @Override
+  public final int hashCode() {
+    return Objects.hash(name, address);
+  }
 }

api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java

@@ -4,308 +4,319 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.velocitypowered.api.util.Favicon;
 import com.velocitypowered.api.util.ModInfo;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
 import net.kyori.text.Component;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import java.util.*;
-
 /**
  * Represents a 1.7 and above server list ping response. This class is immutable.
  */
 public final class ServerPing {
-    private final Version version;
-    private final @Nullable Players players;
-    private final Component description;
-    private final @Nullable Favicon favicon;
-    private final @Nullable ModInfo modinfo;
 
-    public ServerPing(Version version, @Nullable Players players, Component description, @Nullable Favicon favicon) {
+  private final Version version;
-        this(version, players, description, favicon, ModInfo.DEFAULT);
+  private final @Nullable Players players;
+  private final Component description;
+  private final @Nullable Favicon favicon;
+  private final @Nullable ModInfo modinfo;
+
+  public ServerPing(Version version, @Nullable Players players, Component description,
+      @Nullable Favicon favicon) {
+    this(version, players, description, favicon, ModInfo.DEFAULT);
+  }
+
+  public ServerPing(Version version, @Nullable Players players, Component description,
+      @Nullable Favicon favicon, @Nullable ModInfo modinfo) {
+    this.version = Preconditions.checkNotNull(version, "version");
+    this.players = players;
+    this.description = Preconditions.checkNotNull(description, "description");
+    this.favicon = favicon;
+    this.modinfo = modinfo;
+  }
+
+  public Version getVersion() {
+    return version;
+  }
+
+  public Optional<Players> getPlayers() {
+    return Optional.ofNullable(players);
+  }
+
+  public Component getDescription() {
+    return description;
+  }
+
+  public Optional<Favicon> getFavicon() {
+    return Optional.ofNullable(favicon);
+  }
+
+  public Optional<ModInfo> getModinfo() {
+    return Optional.ofNullable(modinfo);
+  }
+
+  @Override
+  public String toString() {
+    return "ServerPing{" +
+        "version=" + version +
+        ", players=" + players +
+        ", description=" + description +
+        ", favicon='" + favicon + '\'' +
+        '}';
+  }
+
+  public Builder asBuilder() {
+    Builder builder = new Builder();
+    builder.version = version;
+    if (players != null) {
+      builder.onlinePlayers = players.online;
+      builder.maximumPlayers = players.max;
+      builder.samplePlayers.addAll(players.sample);
+    } else {
+      builder.nullOutPlayers = true;
+    }
+    builder.description = description;
+    builder.favicon = favicon;
+    builder.nullOutModinfo = modinfo == null;
+    if (modinfo != null) {
+      builder.modType = modinfo.getType();
+      builder.mods.addAll(modinfo.getMods());
+    }
+    return builder;
+  }
+
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  /**
+   * A builder for {@link ServerPing} objects.
+   */
+  public static final class Builder {
+
+    private Version version = new Version(0, "Unknown");
+    private int onlinePlayers;
+    private int maximumPlayers;
+    private final List<SamplePlayer> samplePlayers = new ArrayList<>();
+    private String modType = "FML";
+    private final List<ModInfo.Mod> mods = new ArrayList<>();
+    private @Nullable Component description;
+    private @Nullable Favicon favicon;
+    private boolean nullOutPlayers;
+    private boolean nullOutModinfo;
+
+    private Builder() {
+
     }
 
-    public ServerPing(Version version, @Nullable Players players, Component description, @Nullable Favicon favicon, @Nullable ModInfo modinfo) {
+    public Builder version(Version version) {
-        this.version = Preconditions.checkNotNull(version, "version");
+      this.version = Preconditions.checkNotNull(version, "version");
-        this.players = players;
+      return this;
-        this.description = Preconditions.checkNotNull(description, "description");
+    }
-        this.favicon = favicon;
+
-        this.modinfo = modinfo;
+    public Builder onlinePlayers(int onlinePlayers) {
+      this.onlinePlayers = onlinePlayers;
+      return this;
+    }
+
+    public Builder maximumPlayers(int maximumPlayers) {
+      this.maximumPlayers = maximumPlayers;
+      return this;
+    }
+
+    public Builder samplePlayers(SamplePlayer... players) {
+      this.samplePlayers.addAll(Arrays.asList(players));
+      return this;
+    }
+
+    public Builder modType(String modType) {
+      this.modType = Preconditions.checkNotNull(modType, "modType");
+      return this;
+    }
+
+    public Builder mods(ModInfo.Mod... mods) {
+      this.mods.addAll(Arrays.asList(mods));
+      return this;
+    }
+
+    public Builder clearMods() {
+      this.mods.clear();
+      return this;
+    }
+
+    public Builder clearSamplePlayers() {
+      this.samplePlayers.clear();
+      return this;
+    }
+
+    public Builder notModCompatible() {
+      this.nullOutModinfo = true;
+      return this;
+    }
+
+    public Builder nullPlayers() {
+      this.nullOutPlayers = true;
+      return this;
+    }
+
+    public Builder description(Component description) {
+      this.description = Preconditions.checkNotNull(description, "description");
+      return this;
+    }
+
+    public Builder favicon(Favicon favicon) {
+      this.favicon = Preconditions.checkNotNull(favicon, "favicon");
+      return this;
+    }
+
+    public ServerPing build() {
+      if (this.version == null) {
+        throw new IllegalStateException("version not specified");
+      }
+      if (this.description == null) {
+        throw new IllegalStateException("no server description supplied");
+      }
+      return new ServerPing(version,
+          nullOutPlayers ? null : new Players(onlinePlayers, maximumPlayers, samplePlayers),
+          description, favicon, nullOutModinfo ? null : new ModInfo(modType, mods));
     }
 
     public Version getVersion() {
-        return version;
+      return version;
     }
 
-    public Optional<Players> getPlayers() {
+    public int getOnlinePlayers() {
-        return Optional.ofNullable(players);
+      return onlinePlayers;
     }
 
-    public Component getDescription() {
+    public int getMaximumPlayers() {
-        return description;
+      return maximumPlayers;
+    }
+
+    public List<SamplePlayer> getSamplePlayers() {
+      return samplePlayers;
+    }
+
+    public Optional<Component> getDescription() {
+      return Optional.ofNullable(description);
     }
 
     public Optional<Favicon> getFavicon() {
-        return Optional.ofNullable(favicon);
+      return Optional.ofNullable(favicon);
     }
 
-    public Optional<ModInfo> getModinfo() {
+    public String getModType() {
-        return Optional.ofNullable(modinfo);
+      return modType;
+    }
+
+    public List<ModInfo.Mod> getMods() {
+      return mods;
     }
 
     @Override
     public String toString() {
-        return "ServerPing{" +
+      return "Builder{" +
-                "version=" + version +
+          "version=" + version +
-                ", players=" + players +
+          ", onlinePlayers=" + onlinePlayers +
-                ", description=" + description +
+          ", maximumPlayers=" + maximumPlayers +
-                ", favicon='" + favicon + '\'' +
+          ", samplePlayers=" + samplePlayers +
-                '}';
+          ", modType=" + modType +
+          ", mods=" + mods +
+          ", description=" + description +
+          ", favicon=" + favicon +
+          ", nullOutPlayers=" + nullOutPlayers +
+          ", nullOutModinfo=" + nullOutModinfo +
+          '}';
+    }
+  }
+
+  public static final class Version {
+
+    private final int protocol;
+    private final String name;
+
+    public Version(int protocol, String name) {
+      this.protocol = protocol;
+      this.name = name;
     }
 
-    public Builder asBuilder() {
+    public int getProtocol() {
-        Builder builder = new Builder();
+      return protocol;
-        builder.version = version;
-        if (players != null) {
-            builder.onlinePlayers = players.online;
-            builder.maximumPlayers = players.max;
-            builder.samplePlayers.addAll(players.sample);
-        } else {
-            builder.nullOutPlayers = true;
-        }
-        builder.description = description;
-        builder.favicon = favicon;
-        builder.nullOutModinfo = modinfo == null;
-        if (modinfo != null) {
-            builder.modType = modinfo.getType();
-            builder.mods.addAll(modinfo.getMods());
-        }
-        return builder;
     }
 
-    public static Builder builder() {
+    public String getName() {
-        return new Builder();
+      return name;
     }
 
-    /**
+    @Override
-     * A builder for {@link ServerPing} objects.
+    public String toString() {
-     */
+      return "Version{" +
-    public static final class Builder {
+          "protocol=" + protocol +
-        private Version version = new Version(0, "Unknown");
+          ", name='" + name + '\'' +
-        private int onlinePlayers;
+          '}';
-        private int maximumPlayers;
+    }
-        private final List<SamplePlayer> samplePlayers = new ArrayList<>();
+  }
-        private String modType = "FML";
-        private final List<ModInfo.Mod> mods = new ArrayList<>();
-        private @Nullable Component description;
-        private @Nullable Favicon favicon;
-        private boolean nullOutPlayers;
-        private boolean nullOutModinfo;
 
-        private Builder() {
+  public static final class Players {
 
-        }
+    private final int online;
+    private final int max;
+    private final List<SamplePlayer> sample;
 
-        public Builder version(Version version) {
+    public Players(int online, int max, List<SamplePlayer> sample) {
-            this.version = Preconditions.checkNotNull(version, "version");
+      this.online = online;
-            return this;
+      this.max = max;
-        }
+      this.sample = ImmutableList.copyOf(sample);
-
-        public Builder onlinePlayers(int onlinePlayers) {
-            this.onlinePlayers = onlinePlayers;
-            return this;
-        }
-
-        public Builder maximumPlayers(int maximumPlayers) {
-            this.maximumPlayers = maximumPlayers;
-            return this;
-        }
-
-        public Builder samplePlayers(SamplePlayer... players) {
-            this.samplePlayers.addAll(Arrays.asList(players));
-            return this;
-        }
-
-        public Builder modType(String modType) {
-            this.modType = Preconditions.checkNotNull(modType, "modType");
-            return this;
-        }
-
-        public Builder mods(ModInfo.Mod... mods) {
-            this.mods.addAll(Arrays.asList(mods));
-            return this;
-        }
-
-        public Builder clearMods() {
-            this.mods.clear();
-            return this;
-        }
-
-        public Builder clearSamplePlayers() {
-            this.samplePlayers.clear();
-            return this;
-        }
-
-        public Builder notModCompatible() {
-            this.nullOutModinfo = true;
-            return this;
-        }
-
-        public Builder nullPlayers() {
-            this.nullOutPlayers = true;
-            return this;
-        }
-
-        public Builder description(Component description) {
-            this.description = Preconditions.checkNotNull(description, "description");
-            return this;
-        }
-
-        public Builder favicon(Favicon favicon) {
-            this.favicon = Preconditions.checkNotNull(favicon, "favicon");
-            return this;
-        }
-
-        public ServerPing build() {
-            if (this.version == null) {
-                throw new IllegalStateException("version not specified");
-            }
-            if (this.description == null) {
-                throw new IllegalStateException("no server description supplied");
-            }
-            return new ServerPing(version, nullOutPlayers ? null : new Players(onlinePlayers, maximumPlayers, samplePlayers),
-                    description, favicon, nullOutModinfo ? null : new ModInfo(modType, mods));
-        }
-
-        public Version getVersion() {
-            return version;
-        }
-
-        public int getOnlinePlayers() {
-            return onlinePlayers;
-        }
-
-        public int getMaximumPlayers() {
-            return maximumPlayers;
-        }
-
-        public List<SamplePlayer> getSamplePlayers() {
-            return samplePlayers;
-        }
-
-        public Optional<Component> getDescription() {
-            return Optional.ofNullable(description);
-        }
-
-        public Optional<Favicon> getFavicon() {
-            return Optional.ofNullable(favicon);
-        }
-
-        public String getModType() {
-            return modType;
-        }
-
-        public List<ModInfo.Mod> getMods() {
-            return mods;
-        }
-
-        @Override
-        public String toString() {
-            return "Builder{" +
-                    "version=" + version +
-                    ", onlinePlayers=" + onlinePlayers +
-                    ", maximumPlayers=" + maximumPlayers +
-                    ", samplePlayers=" + samplePlayers +
-                    ", modType=" + modType +
-                    ", mods=" + mods +
-                    ", description=" + description +
-                    ", favicon=" + favicon +
-                    ", nullOutPlayers=" + nullOutPlayers +
-                    ", nullOutModinfo=" + nullOutModinfo +
-                    '}';
-        }
     }
 
-    public static final class Version {
+    public int getOnline() {
-        private final int protocol;
+      return online;
-        private final String name;
-
-        public Version(int protocol, String name) {
-            this.protocol = protocol;
-            this.name = name;
-        }
-
-        public int getProtocol() {
-            return protocol;
-        }
-
-        public String getName() {
-            return name;
-        }
-
-        @Override
-        public String toString() {
-            return "Version{" +
-                    "protocol=" + protocol +
-                    ", name='" + name + '\'' +
-                    '}';
-        }
     }
 
-    public static final class Players {
+    public int getMax() {
-        private final int online;
+      return max;
-        private final int max;
-        private final List<SamplePlayer> sample;
-
-        public Players(int online, int max, List<SamplePlayer> sample) {
-            this.online = online;
-            this.max = max;
-            this.sample = ImmutableList.copyOf(sample);
-        }
-
-        public int getOnline() {
-            return online;
-        }
-
-        public int getMax() {
-            return max;
-        }
-
-        public List<SamplePlayer> getSample() {
-            return sample;
-        }
-
-        @Override
-        public String toString() {
-            return "Players{" +
-                    "online=" + online +
-                    ", max=" + max +
-                    ", sample=" + sample +
-                    '}';
-        }
     }
 
-    public static final class SamplePlayer {
+    public List<SamplePlayer> getSample() {
-        private final String name;
+      return sample;
-        private final UUID id;
-
-        public SamplePlayer(String name, UUID id) {
-            this.name = name;
-            this.id = id;
-        }
-
-        public String getName() {
-            return name;
-        }
-
-        public UUID getId() {
-            return id;
-        }
-
-        @Override
-        public String toString() {
-            return "SamplePlayer{" +
-                    "name='" + name + '\'' +
-                    ", id=" + id +
-                    '}';
-        }
     }
+
+    @Override
+    public String toString() {
+      return "Players{" +
+          "online=" + online +
+          ", max=" + max +
+          ", sample=" + sample +
+          '}';
+    }
+  }
+
+  public static final class SamplePlayer {
+
+    private final String name;
+    private final UUID id;
+
+    public SamplePlayer(String name, UUID id) {
+      this.name = name;
+      this.id = id;
+    }
+
+    public String getName() {
+      return name;
+    }
+
+    public UUID getId() {
+      return id;
+    }
+
+    @Override
+    public String toString() {
+      return "SamplePlayer{" +
+          "name='" + name + '\'' +
+          ", id=" + id +
+          '}';
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/scheduler/ScheduledTask.java

@@ -4,21 +4,24 @@ package com.velocitypowered.api.scheduler;
  * Represents a task that is scheduled to run on the proxy.
  */
 public interface ScheduledTask {
-    /**
-     * Returns the plugin that scheduled this task.
-     * @return the plugin that scheduled this task
-     */
-    Object plugin();
 
-    /**
+  /**
-     * Returns the current status of this task.
+   * Returns the plugin that scheduled this task.
-     * @return the current status of this task
+   *
-     */
+   * @return the plugin that scheduled this task
-    TaskStatus status();
+   */
+  Object plugin();
 
-    /**
+  /**
-     * Cancels this task. If the task is already running, the thread in which it is running will be interrupted.
+   * Returns the current status of this task.
-     * If the task is not currently running, Velocity will terminate it safely.
+   *
-     */
+   * @return the current status of this task
-    void cancel();
+   */
+  TaskStatus status();
+
+  /**
+   * Cancels this task. If the task is already running, the thread in which it is running will be
+   * interrupted. If the task is not currently running, Velocity will terminate it safely.
+   */
+  void cancel();
 }

api/src/main/java/com/velocitypowered/api/scheduler/Scheduler.java

@@ -1,57 +1,65 @@
 package com.velocitypowered.api.scheduler;
 
-import org.checkerframework.common.value.qual.IntRange;
-
 import java.util.concurrent.TimeUnit;
+import org.checkerframework.common.value.qual.IntRange;
 
 /**
  * Represents a scheduler to execute tasks on the proxy.
  */
 public interface Scheduler {
-    /**
+
-     * Initializes a new {@link TaskBuilder} for creating a task on the proxy.
+  /**
-     * @param plugin the plugin to request the task for
+   * Initializes a new {@link TaskBuilder} for creating a task on the proxy.
-     * @param runnable the task to run when scheduled
+   *
-     * @return the task builder
+   * @param plugin the plugin to request the task for
-     */
+   * @param runnable the task to run when scheduled
-    TaskBuilder buildTask(Object plugin, Runnable runnable);
+   * @return the task builder
+   */
+  TaskBuilder buildTask(Object plugin, Runnable runnable);
+
+  /**
+   * Represents a fluent interface to schedule tasks on the proxy.
+   */
+  interface TaskBuilder {
 
     /**
-     * Represents a fluent interface to schedule tasks on the proxy.
+     * Specifies that the task should delay its execution by the specified amount of time.
+     *
+     * @param time the time to delay by
+     * @param unit the unit of time for {@code time}
+     * @return this builder, for chaining
      */
-    interface TaskBuilder {
+    TaskBuilder delay(@IntRange(from = 0) long time, TimeUnit unit);
-        /**
-         * Specifies that the task should delay its execution by the specified amount of time.
-         * @param time the time to delay by
-         * @param unit the unit of time for {@code time}
-         * @return this builder, for chaining
-         */
-        TaskBuilder delay(@IntRange(from = 0) long time, TimeUnit unit);
 
-        /**
+    /**
-         * Specifies that the task should continue running after waiting for the specified amount, until it is cancelled.
+     * Specifies that the task should continue running after waiting for the specified amount, until
-         * @param time the time to delay by
+     * it is cancelled.
-         * @param unit the unit of time for {@code time}
+     *
-         * @return this builder, for chaining
+     * @param time the time to delay by
-         */
+     * @param unit the unit of time for {@code time}
-        TaskBuilder repeat(@IntRange(from = 0) long time, TimeUnit unit);
+     * @return this builder, for chaining
+     */
+    TaskBuilder repeat(@IntRange(from = 0) long time, TimeUnit unit);
 
-        /**
+    /**
-         * Clears the delay on this task.
+     * Clears the delay on this task.
-         * @return this builder, for chaining
+     *
-         */
+     * @return this builder, for chaining
-        TaskBuilder clearDelay();
+     */
+    TaskBuilder clearDelay();
 
-        /**
+    /**
-         * Clears the repeat interval on this task.
+     * Clears the repeat interval on this task.
-         * @return this builder, for chaining
+     *
-         */
+     * @return this builder, for chaining
-        TaskBuilder clearRepeat();
+     */
+    TaskBuilder clearRepeat();
 
-        /**
+    /**
-         * Schedules this task for execution.
+     * Schedules this task for execution.
-         * @return the scheduled task
+     *
-         */
+     * @return the scheduled task
-        ScheduledTask schedule();
+     */
-    }
+    ScheduledTask schedule();
+  }
 }

api/src/main/java/com/velocitypowered/api/scheduler/TaskStatus.java

@@ -1,16 +1,16 @@
 package com.velocitypowered.api.scheduler;
 
 public enum TaskStatus {
-    /**
+  /**
-     * The task is scheduled and is currently running.
+   * The task is scheduled and is currently running.
-     */
+   */
-    SCHEDULED,
+  SCHEDULED,
-    /**
+  /**
-     * The task was cancelled with {@link ScheduledTask#cancel()}.
+   * The task was cancelled with {@link ScheduledTask#cancel()}.
-     */
+   */
-    CANCELLED,
+  CANCELLED,
-    /**
+  /**
-     * The task has run to completion. This is applicable only for tasks without a repeat.
+   * The task has run to completion. This is applicable only for tasks without a repeat.
-     */
+   */
-    FINISHED
+  FINISHED
 }

api/src/main/java/com/velocitypowered/api/util/Favicon.java

@@ -1,9 +1,6 @@
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
-import javax.imageio.ImageIO;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -12,78 +9,92 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Base64;
 import java.util.Objects;
+import javax.imageio.ImageIO;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
- * Represents a Minecraft server favicon. A Minecraft server favicon is a 64x64 image that can be displayed to a remote
+ * Represents a Minecraft server favicon. A Minecraft server favicon is a 64x64 image that can be
- * client that sends a Server List Ping packet, and is automatically displayed in the Minecraft client.
+ * displayed to a remote client that sends a Server List Ping packet, and is automatically displayed
+ * in the Minecraft client.
  */
 public final class Favicon {
-    private final String base64Url;
 
-    /**
+  private final String base64Url;
-     * Directly create a favicon using its Base64 URL directly. You are generally better served by the create() series
-     * of functions.
-     * @param base64Url the url for use with this favicon
-     */
-    public Favicon(String base64Url) {
-        this.base64Url = Preconditions.checkNotNull(base64Url, "base64Url");
-    }
 
-    /**
+  /**
-     * Returns the Base64-encoded URI for this image.
+   * Directly create a favicon using its Base64 URL directly. You are generally better served by the
-     * @return a URL representing this favicon
+   * create() series of functions.
-     */
+   *
-    public String getBase64Url() {
+   * @param base64Url the url for use with this favicon
-        return base64Url;
+   */
-    }
+  public Favicon(String base64Url) {
+    this.base64Url = Preconditions.checkNotNull(base64Url, "base64Url");
+  }
 
-    @Override
+  /**
-    public boolean equals(@Nullable Object o) {
+   * Returns the Base64-encoded URI for this image.
-        if (this == o) return true;
+   *
-        if (o == null || getClass() != o.getClass()) return false;
+   * @return a URL representing this favicon
-        Favicon favicon = (Favicon) o;
+   */
-        return Objects.equals(base64Url, favicon.base64Url);
+  public String getBase64Url() {
-    }
+    return base64Url;
+  }
 
-    @Override
+  @Override
-    public int hashCode() {
+  public boolean equals(@Nullable Object o) {
-        return Objects.hash(base64Url);
+    if (this == o) {
+      return true;
     }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Favicon favicon = (Favicon) o;
+    return Objects.equals(base64Url, favicon.base64Url);
+  }
 
-    @Override
+  @Override
-    public String toString() {
+  public int hashCode() {
-        return "Favicon{" +
+    return Objects.hash(base64Url);
-                "base64Url='" + base64Url + '\'' +
+  }
-                '}';
-    }
 
-    /**
+  @Override
-     * Creates a new {@code Favicon} from the specified {@code image}.
+  public String toString() {
-     * @param image the image to use for the favicon
+    return "Favicon{" +
-     * @return the created {@link Favicon} instance
+        "base64Url='" + base64Url + '\'' +
-     */
+        '}';
-    public static Favicon create(BufferedImage image) {
+  }
-        Preconditions.checkNotNull(image, "image");
-        Preconditions.checkArgument(image.getWidth() == 64 && image.getHeight() == 64, "Image does not have" +
-                " 64x64 dimensions (found %sx%s)", image.getWidth(), image.getHeight());
-        ByteArrayOutputStream os = new ByteArrayOutputStream();
-        try {
-            ImageIO.write(image, "PNG", os);
-        } catch (IOException e) {
-            throw new AssertionError(e);
-        }
-        return new Favicon("data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray()));
-    }
 
-    /**
+  /**
-     * Creates a new {@code Favicon} by reading the image from the specified {@code path}.
+   * Creates a new {@code Favicon} from the specified {@code image}.
-     * @param path the path to the image to create a favicon for
+   *
-     * @return the created {@link Favicon} instance
+   * @param image the image to use for the favicon
-     * @throws IOException if the file could not be read from the path
+   * @return the created {@link Favicon} instance
-     */
+   */
-    public static Favicon create(Path path) throws IOException {
+  public static Favicon create(BufferedImage image) {
-        try (InputStream stream = Files.newInputStream(path)) {
+    Preconditions.checkNotNull(image, "image");
-            return create(ImageIO.read(stream));
+    Preconditions
-        }
+        .checkArgument(image.getWidth() == 64 && image.getHeight() == 64, "Image does not have" +
+            " 64x64 dimensions (found %sx%s)", image.getWidth(), image.getHeight());
+    ByteArrayOutputStream os = new ByteArrayOutputStream();
+    try {
+      ImageIO.write(image, "PNG", os);
+    } catch (IOException e) {
+      throw new AssertionError(e);
     }
+    return new Favicon(
+        "data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray()));
+  }
+
+  /**
+   * Creates a new {@code Favicon} by reading the image from the specified {@code path}.
+   *
+   * @param path the path to the image to create a favicon for
+   * @return the created {@link Favicon} instance
+   * @throws IOException if the file could not be read from the path
+   */
+  public static Favicon create(Path path) throws IOException {
+    try (InputStream stream = Files.newInputStream(path)) {
+      return create(ImageIO.read(stream));
+    }
+  }
 }

api/src/main/java/com/velocitypowered/api/util/GameProfile.java

@@ -2,7 +2,6 @@ package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
-
 import java.util.List;
 import java.util.UUID;
 
@@ -10,82 +9,85 @@ import java.util.UUID;
  * Represents a Mojang game profile. This class is immutable.
  */
 public final class GameProfile {
-    private final String id;
+
+  private final String id;
+  private final String name;
+  private final List<Property> properties;
+
+  public GameProfile(String id, String name, List<Property> properties) {
+    this.id = Preconditions.checkNotNull(id, "id");
+    this.name = Preconditions.checkNotNull(name, "name");
+    this.properties = ImmutableList.copyOf(properties);
+  }
+
+  public String getId() {
+    return id;
+  }
+
+  public UUID idAsUuid() {
+    return UuidUtils.fromUndashed(id);
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public List<Property> getProperties() {
+    return properties;
+  }
+
+  /**
+   * Creates a game profile suitable for use in offline-mode.
+   *
+   * @param username the username to use
+   * @return the new offline-mode game profile
+   */
+  public static GameProfile forOfflinePlayer(String username) {
+    Preconditions.checkNotNull(username, "username");
+    String id = UuidUtils.toUndashed(UuidUtils.generateOfflinePlayerUuid(username));
+    return new GameProfile(id, username, ImmutableList.of());
+  }
+
+  @Override
+  public String toString() {
+    return "GameProfile{" +
+        "id='" + id + '\'' +
+        ", name='" + name + '\'' +
+        ", properties=" + properties +
+        '}';
+  }
+
+  public static final class Property {
+
     private final String name;
-    private final List<Property> properties;
+    private final String value;
+    private final String signature;
 
-    public GameProfile(String id, String name, List<Property> properties) {
+    public Property(String name, String value, String signature) {
-        this.id = Preconditions.checkNotNull(id, "id");
+      this.name = Preconditions.checkNotNull(name, "name");
-        this.name = Preconditions.checkNotNull(name, "name");
+      this.value = Preconditions.checkNotNull(value, "value");
-        this.properties = ImmutableList.copyOf(properties);
+      this.signature = Preconditions.checkNotNull(signature, "signature");
-    }
-
-    public String getId() {
-        return id;
-    }
-
-    public UUID idAsUuid() {
-        return UuidUtils.fromUndashed(id);
     }
 
     public String getName() {
-        return name;
+      return name;
     }
 
-    public List<Property> getProperties() {
+    public String getValue() {
-        return properties;
+      return value;
     }
 
-    /**
+    public String getSignature() {
-     * Creates a game profile suitable for use in offline-mode.
+      return signature;
-     * @param username the username to use
-     * @return the new offline-mode game profile
-     */
-    public static GameProfile forOfflinePlayer(String username) {
-        Preconditions.checkNotNull(username, "username");
-        String id = UuidUtils.toUndashed(UuidUtils.generateOfflinePlayerUuid(username));
-        return new GameProfile(id, username, ImmutableList.of());
     }
 
     @Override
     public String toString() {
-        return "GameProfile{" +
+      return "Property{" +
-                "id='" + id + '\'' +
+          "name='" + name + '\'' +
-                ", name='" + name + '\'' +
+          ", value='" + value + '\'' +
-                ", properties=" + properties +
+          ", signature='" + signature + '\'' +
-                '}';
+          '}';
-    }
-
-    public static final class Property {
-        private final String name;
-        private final String value;
-        private final String signature;
-
-        public Property(String name, String value, String signature) {
-            this.name = Preconditions.checkNotNull(name, "name");
-            this.value = Preconditions.checkNotNull(value, "value");
-            this.signature = Preconditions.checkNotNull(signature, "signature");
-        }
-
-        public String getName() {
-            return name;
-        }
-
-        public String getValue() {
-            return value;
-        }
-
-        public String getSignature() {
-            return signature;
-        }
-
-        @Override
-        public String toString() {
-            return "Property{" +
-                    "name='" + name + '\'' +
-                    ", value='" + value + '\'' +
-                    ", signature='" + signature + '\'' +
-                    '}';
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/util/MessagePosition.java

@@ -4,17 +4,18 @@ package com.velocitypowered.api.util;
  * Represents where a chat message is going to be sent.
  */
 public enum MessagePosition {
-    /**
+  /**
-     * The chat message will appear in the client's HUD. These messages can be filtered out by the client.
+   * The chat message will appear in the client's HUD. These messages can be filtered out by the
-     */
+   * client.
-    CHAT,
+   */
-    /**
+  CHAT,
-     * The chat message will appear in the client's HUD and can't be dismissed.
+  /**
-     */
+   * The chat message will appear in the client's HUD and can't be dismissed.
-    SYSTEM,
+   */
-    /**
+  SYSTEM,
-     * The chat message will appear above the player's main HUD. This text format doesn't support many component features,
+  /**
-     * such as hover events.
+   * The chat message will appear above the player's main HUD. This text format doesn't support many
-     */
+   * component features, such as hover events.
-    ACTION_BAR
+   */
+  ACTION_BAR
 }

api/src/main/java/com/velocitypowered/api/util/ModInfo.java

@@ -2,59 +2,60 @@ package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
-
 import java.util.List;
 
 public final class ModInfo {
-    public static final ModInfo DEFAULT = new ModInfo("FML", ImmutableList.of());
 
-    private final String type;
+  public static final ModInfo DEFAULT = new ModInfo("FML", ImmutableList.of());
-    private final List<Mod> modList;
 
-    public ModInfo(String type, List<Mod> modList) {
+  private final String type;
-        this.type = Preconditions.checkNotNull(type, "type");
+  private final List<Mod> modList;
-        this.modList = ImmutableList.copyOf(modList);
+
+  public ModInfo(String type, List<Mod> modList) {
+    this.type = Preconditions.checkNotNull(type, "type");
+    this.modList = ImmutableList.copyOf(modList);
+  }
+
+  public String getType() {
+    return type;
+  }
+
+  public List<Mod> getMods() {
+    return modList;
+  }
+
+  @Override
+  public String toString() {
+    return "ModInfo{" +
+        "type='" + type + '\'' +
+        ", modList=" + modList +
+        '}';
+  }
+
+  public static final class Mod {
+
+    private final String id;
+    private final String version;
+
+    public Mod(String id, String version) {
+      this.id = Preconditions.checkNotNull(id, "id");
+      this.version = Preconditions.checkNotNull(version, "version");
     }
 
-    public String getType() {
+    public String getId() {
-        return type;
+      return id;
     }
 
-    public List<Mod> getMods() {
+    public String getVersion() {
-        return modList;
+      return version;
     }
 
     @Override
     public String toString() {
-        return "ModInfo{" +
+      return "Mod{" +
-                "type='" + type + '\'' +
+          "id='" + id + '\'' +
-                ", modList=" + modList +
+          ", version='" + version + '\'' +
-                '}';
+          '}';
-    }
-    
-    public static final class Mod {
-        private final String id;
-        private final String version;
-        
-        public Mod(String id, String version) {
-            this.id = Preconditions.checkNotNull(id, "id");
-            this.version = Preconditions.checkNotNull(version, "version");
-        }
-        
-        public String getId() {
-            return id;
-        }
-        
-        public String getVersion() {
-            return version;
-        }
-        
-        @Override
-        public String toString() {
-            return "Mod{" +
-                    "id='" + id + '\'' +
-                    ", version='" + version + '\'' +
-                    '}';
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/util/ProxyVersion.java

@@ -1,57 +1,61 @@
 package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Objects;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * Provides a version object for the proxy.
  */
 public final class ProxyVersion {
-    private final String name;
-    private final String vendor;
-    private final String version;
 
-    public ProxyVersion(String name, String vendor, String version) {
+  private final String name;
-        this.name = Preconditions.checkNotNull(name, "name");
+  private final String vendor;
-        this.vendor = Preconditions.checkNotNull(vendor, "vendor");
+  private final String version;
-        this.version = Preconditions.checkNotNull(version, "version");
-    }
 
-    public String getName() {
+  public ProxyVersion(String name, String vendor, String version) {
-        return name;
+    this.name = Preconditions.checkNotNull(name, "name");
-    }
+    this.vendor = Preconditions.checkNotNull(vendor, "vendor");
+    this.version = Preconditions.checkNotNull(version, "version");
+  }
 
-    public String getVendor() {
+  public String getName() {
-        return vendor;
+    return name;
-    }
+  }
 
-    public String getVersion() {
+  public String getVendor() {
-        return version;
+    return vendor;
-    }
+  }
 
-    @Override
+  public String getVersion() {
-    public boolean equals(@Nullable Object o) {
+    return version;
-        if (this == o) return true;
+  }
-        if (o == null || getClass() != o.getClass()) return false;
-        ProxyVersion that = (ProxyVersion) o;
-        return Objects.equals(name, that.name) &&
-                Objects.equals(vendor, that.vendor) &&
-                Objects.equals(version, that.version);
-    }
 
-    @Override
+  @Override
-    public int hashCode() {
+  public boolean equals(@Nullable Object o) {
-        return Objects.hash(name, vendor, version);
+    if (this == o) {
+      return true;
     }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ProxyVersion that = (ProxyVersion) o;
+    return Objects.equals(name, that.name) &&
+        Objects.equals(vendor, that.vendor) &&
+        Objects.equals(version, that.version);
+  }
 
-    @Override
+  @Override
-    public String toString() {
+  public int hashCode() {
-        return "ProxyVersion{" +
+    return Objects.hash(name, vendor, version);
-                "name='" + name + '\'' +
+  }
-                ", vendor='" + vendor + '\'' +
+
-                ", version='" + version + '\'' +
+  @Override
-                '}';
+  public String toString() {
-    }
+    return "ProxyVersion{" +
+        "name='" + name + '\'' +
+        ", vendor='" + vendor + '\'' +
+        ", version='" + version + '\'' +
+        '}';
+  }
 }

api/src/main/java/com/velocitypowered/api/util/UuidUtils.java

@@ -2,7 +2,6 @@ package com.velocitypowered.api.util;
 
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
-
 import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 import java.util.UUID;
@@ -11,41 +10,45 @@ import java.util.UUID;
  * Provides a small, useful selection of utilities for working with Minecraft UUIDs.
  */
 public final class UuidUtils {
-    private UuidUtils() {
-        throw new AssertionError();
-    }
 
-    /**
+  private UuidUtils() {
-     * Converts from an undashed Mojang-style UUID into a Java {@link UUID} object.
+    throw new AssertionError();
-     * @param string the string to convert
+  }
-     * @return the UUID object
-     */
-    public static UUID fromUndashed(final String string) {
-        Objects.requireNonNull(string, "string");
-        Preconditions.checkArgument(string.length() == 32, "Length is incorrect");
-        return new UUID(
-            Long.parseUnsignedLong(string.substring(0, 16), 16),
-            Long.parseUnsignedLong(string.substring(16), 16)
-        );
-    }
 
-    /**
+  /**
-     * Converts from a Java {@link UUID} object into an undashed Mojang-style UUID.
+   * Converts from an undashed Mojang-style UUID into a Java {@link UUID} object.
-     * @param uuid the UUID to convert
+   *
-     * @return the undashed UUID
+   * @param string the string to convert
-     */
+   * @return the UUID object
-    public static String toUndashed(final UUID uuid) {
+   */
-        Preconditions.checkNotNull(uuid, "uuid");
+  public static UUID fromUndashed(final String string) {
-        return Strings.padStart(Long.toHexString(uuid.getMostSignificantBits()), 16, '0') +
+    Objects.requireNonNull(string, "string");
-                Strings.padStart(Long.toHexString(uuid.getLeastSignificantBits()), 16, '0');
+    Preconditions.checkArgument(string.length() == 32, "Length is incorrect");
-    }
+    return new UUID(
+        Long.parseUnsignedLong(string.substring(0, 16), 16),
+        Long.parseUnsignedLong(string.substring(16), 16)
+    );
+  }
 
-    /**
+  /**
-     * Generates a UUID for use for offline mode.
+   * Converts from a Java {@link UUID} object into an undashed Mojang-style UUID.
-     * @param username the username to use
+   *
-     * @return the offline mode UUID
+   * @param uuid the UUID to convert
-     */
+   * @return the undashed UUID
-    public static UUID generateOfflinePlayerUuid(String username) {
+   */
-        return UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(StandardCharsets.UTF_8));
+  public static String toUndashed(final UUID uuid) {
-    }
+    Preconditions.checkNotNull(uuid, "uuid");
+    return Strings.padStart(Long.toHexString(uuid.getMostSignificantBits()), 16, '0') +
+        Strings.padStart(Long.toHexString(uuid.getLeastSignificantBits()), 16, '0');
+  }
+
+  /**
+   * Generates a UUID for use for offline mode.
+   *
+   * @param username the username to use
+   * @return the offline mode UUID
+   */
+  public static UUID generateOfflinePlayerUuid(String username) {
+    return UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(StandardCharsets.UTF_8));
+  }
 }

api/src/main/java/com/velocitypowered/api/util/title/TextTitle.java

@@ -1,236 +1,251 @@
 package com.velocitypowered.api.util.title;
 
 import com.google.common.base.Preconditions;
-import net.kyori.text.Component;
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.Objects;
 import java.util.Optional;
+import net.kyori.text.Component;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * Represents a "full" title, including all components. This class is immutable.
  */
 public final class TextTitle implements Title {
-    private final @Nullable Component title;
-    private final @Nullable Component subtitle;
-    private final int stay;
-    private final int fadeIn;
-    private final int fadeOut;
-    private final boolean resetBeforeSend;
 
-    private TextTitle(Builder builder) {
+  private final @Nullable Component title;
-        this.title = builder.title;
+  private final @Nullable Component subtitle;
-        this.subtitle = builder.subtitle;
+  private final int stay;
-        this.stay = builder.stay;
+  private final int fadeIn;
-        this.fadeIn = builder.fadeIn;
+  private final int fadeOut;
-        this.fadeOut = builder.fadeOut;
+  private final boolean resetBeforeSend;
-        this.resetBeforeSend = builder.resetBeforeSend;
+
+  private TextTitle(Builder builder) {
+    this.title = builder.title;
+    this.subtitle = builder.subtitle;
+    this.stay = builder.stay;
+    this.fadeIn = builder.fadeIn;
+    this.fadeOut = builder.fadeOut;
+    this.resetBeforeSend = builder.resetBeforeSend;
+  }
+
+  /**
+   * Returns the main title this title has, if any.
+   *
+   * @return the main title of this title
+   */
+  public Optional<Component> getTitle() {
+    return Optional.ofNullable(title);
+  }
+
+  /**
+   * Returns the subtitle this title has, if any.
+   *
+   * @return the subtitle
+   */
+  public Optional<Component> getSubtitle() {
+    return Optional.ofNullable(subtitle);
+  }
+
+  /**
+   * Returns the number of ticks this title will stay up.
+   *
+   * @return how long the title will stay, in ticks
+   */
+  public int getStay() {
+    return stay;
+  }
+
+  /**
+   * Returns the number of ticks over which this title will fade in.
+   *
+   * @return how long the title will fade in, in ticks
+   */
+  public int getFadeIn() {
+    return fadeIn;
+  }
+
+  /**
+   * Returns the number of ticks over which this title will fade out.
+   *
+   * @return how long the title will fade out, in ticks
+   */
+  public int getFadeOut() {
+    return fadeOut;
+  }
+
+  /**
+   * Returns whether or not a reset packet will be sent before this title is sent. By default,
+   * unless explicitly disabled, this is enabled by default.
+   *
+   * @return whether or not a reset packet will be sent before this title is sent
+   */
+  public boolean isResetBeforeSend() {
+    return resetBeforeSend;
+  }
+
+  /**
+   * Determines whether or not this title has times set on it. If none are set, it will update the
+   * previous title set on the client.
+   *
+   * @return whether or not this title has times set on it
+   */
+  public boolean areTimesSet() {
+    return stay != 0 || fadeIn != 0 || fadeOut != 0;
+  }
+
+  /**
+   * Creates a new builder from the contents of this title so that it may be changed.
+   *
+   * @return a builder instance with the contents of this title
+   */
+  public Builder toBuilder() {
+    return new Builder(this);
+  }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TextTitle textTitle = (TextTitle) o;
+    return stay == textTitle.stay &&
+        fadeIn == textTitle.fadeIn &&
+        fadeOut == textTitle.fadeOut &&
+        resetBeforeSend == textTitle.resetBeforeSend &&
+        Objects.equals(title, textTitle.title) &&
+        Objects.equals(subtitle, textTitle.subtitle);
+  }
+
+  @Override
+  public String toString() {
+    return "TextTitle{" +
+        "title=" + title +
+        ", subtitle=" + subtitle +
+        ", stay=" + stay +
+        ", fadeIn=" + fadeIn +
+        ", fadeOut=" + fadeOut +
+        ", resetBeforeSend=" + resetBeforeSend +
+        '}';
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(title, subtitle, stay, fadeIn, fadeOut, resetBeforeSend);
+  }
+
+  /**
+   * Creates a new builder for constructing titles.
+   *
+   * @return a builder for constructing titles
+   */
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  public static class Builder {
+
+    private @Nullable Component title;
+    private @Nullable Component subtitle;
+    private int stay;
+    private int fadeIn;
+    private int fadeOut;
+    private boolean resetBeforeSend = true;
+
+    private Builder() {
+    }
+
+    private Builder(TextTitle copy) {
+      this.title = copy.title;
+      this.subtitle = copy.subtitle;
+      this.stay = copy.stay;
+      this.fadeIn = copy.fadeIn;
+      this.fadeOut = copy.fadeOut;
+      this.resetBeforeSend = copy.resetBeforeSend;
+    }
+
+    public Builder title(Component title) {
+      this.title = Preconditions.checkNotNull(title, "title");
+      return this;
+    }
+
+    public Builder clearTitle() {
+      this.title = null;
+      return this;
+    }
+
+    public Builder subtitle(Component subtitle) {
+      this.subtitle = Preconditions.checkNotNull(subtitle, "subtitle");
+      return this;
+    }
+
+    public Builder clearSubtitle() {
+      this.subtitle = null;
+      return this;
+    }
+
+    public Builder stay(int ticks) {
+      Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
+      this.stay = ticks;
+      return this;
+    }
+
+    public Builder fadeIn(int ticks) {
+      Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
+      this.fadeIn = ticks;
+      return this;
+    }
+
+    public Builder fadeOut(int ticks) {
+      Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
+      this.fadeOut = ticks;
+      return this;
+    }
+
+    public Builder resetBeforeSend(boolean b) {
+      this.resetBeforeSend = b;
+      return this;
     }
 
-    /**
-     * Returns the main title this title has, if any.
-     * @return the main title of this title
-     */
     public Optional<Component> getTitle() {
-        return Optional.ofNullable(title);
+      return Optional.ofNullable(title);
     }
 
-    /**
-     * Returns the subtitle this title has, if any.
-     * @return the subtitle
-     */
     public Optional<Component> getSubtitle() {
-        return Optional.ofNullable(subtitle);
+      return Optional.ofNullable(subtitle);
     }
 
-    /**
-     * Returns the number of ticks this title will stay up.
-     * @return how long the title will stay, in ticks
-     */
     public int getStay() {
-        return stay;
+      return stay;
     }
 
-    /**
-     * Returns the number of ticks over which this title will fade in.
-     * @return how long the title will fade in, in ticks
-     */
     public int getFadeIn() {
-        return fadeIn;
+      return fadeIn;
     }
 
-    /**
-     * Returns the number of ticks over which this title will fade out.
-     * @return how long the title will fade out, in ticks
-     */
     public int getFadeOut() {
-        return fadeOut;
+      return fadeOut;
     }
 
-    /**
-     * Returns whether or not a reset packet will be sent before this title is sent. By default, unless explicitly
-     * disabled, this is enabled by default.
-     * @return whether or not a reset packet will be sent before this title is sent
-     */
     public boolean isResetBeforeSend() {
-        return resetBeforeSend;
+      return resetBeforeSend;
     }
 
-    /**
+    public TextTitle build() {
-     * Determines whether or not this title has times set on it. If none are set, it will update the previous title
+      return new TextTitle(this);
-     * set on the client.
-     * @return whether or not this title has times set on it
-     */
-    public boolean areTimesSet() {
-        return stay != 0 || fadeIn != 0 || fadeOut != 0;
-    }
-
-    /**
-     * Creates a new builder from the contents of this title so that it may be changed.
-     * @return a builder instance with the contents of this title
-     */
-    public Builder toBuilder() {
-        return new Builder(this);
-    }
-
-    @Override
-    public boolean equals(@Nullable Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        TextTitle textTitle = (TextTitle) o;
-        return stay == textTitle.stay &&
-                fadeIn == textTitle.fadeIn &&
-                fadeOut == textTitle.fadeOut &&
-                resetBeforeSend == textTitle.resetBeforeSend &&
-                Objects.equals(title, textTitle.title) &&
-                Objects.equals(subtitle, textTitle.subtitle);
     }
 
     @Override
     public String toString() {
-        return "TextTitle{" +
+      return "Builder{" +
-                "title=" + title +
+          "title=" + title +
-                ", subtitle=" + subtitle +
+          ", subtitle=" + subtitle +
-                ", stay=" + stay +
+          ", stay=" + stay +
-                ", fadeIn=" + fadeIn +
+          ", fadeIn=" + fadeIn +
-                ", fadeOut=" + fadeOut +
+          ", fadeOut=" + fadeOut +
-                ", resetBeforeSend=" + resetBeforeSend +
+          ", resetBeforeSend=" + resetBeforeSend +
-                '}';
+          '}';
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(title, subtitle, stay, fadeIn, fadeOut, resetBeforeSend);
-    }
-
-    /**
-     * Creates a new builder for constructing titles.
-     * @return a builder for constructing titles
-     */
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-        private @Nullable Component title;
-        private @Nullable Component subtitle;
-        private int stay;
-        private int fadeIn;
-        private int fadeOut;
-        private boolean resetBeforeSend = true;
-
-        private Builder() {}
-
-        private Builder(TextTitle copy) {
-            this.title = copy.title;
-            this.subtitle = copy.subtitle;
-            this.stay = copy.stay;
-            this.fadeIn = copy.fadeIn;
-            this.fadeOut = copy.fadeOut;
-            this.resetBeforeSend = copy.resetBeforeSend;
-        }
-
-        public Builder title(Component title) {
-            this.title = Preconditions.checkNotNull(title, "title");
-            return this;
-        }
-
-        public Builder clearTitle() {
-            this.title = null;
-            return this;
-        }
-
-        public Builder subtitle(Component subtitle) {
-            this.subtitle = Preconditions.checkNotNull(subtitle, "subtitle");
-            return this;
-        }
-
-        public Builder clearSubtitle() {
-            this.subtitle = null;
-            return this;
-        }
-
-        public Builder stay(int ticks) {
-            Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
-            this.stay = ticks;
-            return this;
-        }
-
-        public Builder fadeIn(int ticks) {
-            Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
-            this.fadeIn = ticks;
-            return this;
-        }
-
-        public Builder fadeOut(int ticks) {
-            Preconditions.checkArgument(ticks >= 0, "ticks value %s is negative", ticks);
-            this.fadeOut = ticks;
-            return this;
-        }
-
-        public Builder resetBeforeSend(boolean b) {
-            this.resetBeforeSend = b;
-            return this;
-        }
-
-        public Optional<Component> getTitle() {
-            return Optional.ofNullable(title);
-        }
-
-        public Optional<Component> getSubtitle() {
-            return Optional.ofNullable(subtitle);
-        }
-
-        public int getStay() {
-            return stay;
-        }
-
-        public int getFadeIn() {
-            return fadeIn;
-        }
-
-        public int getFadeOut() {
-            return fadeOut;
-        }
-
-        public boolean isResetBeforeSend() {
-            return resetBeforeSend;
-        }
-
-        public TextTitle build() {
-            return new TextTitle(this);
-        }
-
-        @Override
-        public String toString() {
-            return "Builder{" +
-                    "title=" + title +
-                    ", subtitle=" + subtitle +
-                    ", stay=" + stay +
-                    ", fadeIn=" + fadeIn +
-                    ", fadeOut=" + fadeOut +
-                    ", resetBeforeSend=" + resetBeforeSend +
-                    '}';
-        }
     }
+  }
 }

api/src/main/java/com/velocitypowered/api/util/title/Title.java

@@ -4,4 +4,5 @@ package com.velocitypowered.api.util.title;
  * Represents a title that can be sent to a Minecraft client.
  */
 public interface Title {
+
 }

api/src/main/java/com/velocitypowered/api/util/title/Titles.java

@@ -4,47 +4,51 @@ package com.velocitypowered.api.util.title;
  * Provides special-purpose titles.
  */
 public final class Titles {
-    private Titles() {
+
-        throw new AssertionError();
+  private Titles() {
+    throw new AssertionError();
+  }
+
+  private static final Title RESET = new Title() {
+    @Override
+    public String toString() {
+      return "reset title";
     }
+  };
 
-    private static final Title RESET = new Title() {
+  private static final Title HIDE = new Title() {
-        @Override
+    @Override
-        public String toString() {
+    public String toString() {
-            return "reset title";
+      return "hide title";
-        }
-    };
-
-    private static final Title HIDE = new Title() {
-        @Override
-        public String toString() {
-            return "hide title";
-        }
-    };
-
-    /**
-     * Returns a title that, when sent to the client, will cause all title data to be reset and any existing title to be
-     * hidden.
-     * @return the reset title
-     */
-    public static Title reset() {
-        return RESET;
     }
+  };
 
-    /**
+  /**
-     * Returns a title that, when sent to the client, will cause any existing title to be hidden. The title may be
+   * Returns a title that, when sent to the client, will cause all title data to be reset and any
-     * restored by a {@link TextTitle} with no title or subtitle (only a time).
+   * existing title to be hidden.
-     * @return the hide title
+   *
-     */
+   * @return the reset title
-    public static Title hide() {
+   */
-        return HIDE;
+  public static Title reset() {
-    }
+    return RESET;
+  }
 
-    /**
+  /**
-     * Returns a builder for {@link TextTitle}s.
+   * Returns a title that, when sent to the client, will cause any existing title to be hidden. The
-     * @return a builder for text titles
+   * title may be restored by a {@link TextTitle} with no title or subtitle (only a time).
-     */
+   *
-    public static TextTitle.Builder text() {
+   * @return the hide title
-        return TextTitle.builder();
+   */
-    }
+  public static Title hide() {
+    return HIDE;
+  }
+
+  /**
+   * Returns a builder for {@link TextTitle}s.
+   *
+   * @return a builder for text titles
+   */
+  public static TextTitle.Builder text() {
+    return TextTitle.builder();
+  }
 }

api/src/test/java/com/velocitypowered/api/util/UuidUtilsTest.java

@@ -1,67 +1,81 @@
 package com.velocitypowered.api.util;
 
-import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.util.UUID;
-
+import org.junit.jupiter.api.Test;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class UuidUtilsTest {
-    private static final UUID EXPECTED_DASHED_UUID = UUID.fromString("6b501978-d3be-4f33-bcf6-6e7808f37a0d");
-    private static final String ACTUAL_UNDASHED_UUID = EXPECTED_DASHED_UUID.toString().replace("-", "");
 
-    private static final UUID ISSUE_109_ZERO_UUID = new UUID(0, 0);
+  private static final UUID EXPECTED_DASHED_UUID = UUID
-    private static final String ISSUE_109_ZERO_UUID_UNDASHED = "00000000000000000000000000000000";
+      .fromString("6b501978-d3be-4f33-bcf6-6e7808f37a0d");
+  private static final String ACTUAL_UNDASHED_UUID = EXPECTED_DASHED_UUID.toString()
+      .replace("-", "");
 
-    private static final UUID ISSUE_109_ONE_LSB_UUID = new UUID(0, 1);
+  private static final UUID ISSUE_109_ZERO_UUID = new UUID(0, 0);
-    private static final String ISSUE_109_ONE_LSB_UUID_UNDASHED = "00000000000000000000000000000001";
+  private static final String ISSUE_109_ZERO_UUID_UNDASHED = "00000000000000000000000000000000";
 
-    private static final UUID ISSUE_109_ONE_MLSB_UUID = new UUID(1, 1);
+  private static final UUID ISSUE_109_ONE_LSB_UUID = new UUID(0, 1);
-    private static final String ISSUE_109_ONE_MLSB_UUID_UNDASHED = "00000000000000010000000000000001";
+  private static final String ISSUE_109_ONE_LSB_UUID_UNDASHED = "00000000000000000000000000000001";
 
-    private static final UUID ISSUE_109_LEADING_ZERO_UUID = UUID.fromString("0d470a25-0416-48a1-b7a6-2a27aa5eb251");
+  private static final UUID ISSUE_109_ONE_MLSB_UUID = new UUID(1, 1);
-    private static final String ISSUE_109_LEADING_ZERO_UNDASHED = "0d470a25041648a1b7a62a27aa5eb251";
+  private static final String ISSUE_109_ONE_MLSB_UUID_UNDASHED = "00000000000000010000000000000001";
 
-    private static final UUID TEST_OFFLINE_PLAYER_UUID = UUID.fromString("708f6260-183d-3912-bbde-5e279a5e739a");
+  private static final UUID ISSUE_109_LEADING_ZERO_UUID = UUID
-    private static final String TEST_OFFLINE_PLAYER = "tuxed";
+      .fromString("0d470a25-0416-48a1-b7a6-2a27aa5eb251");
+  private static final String ISSUE_109_LEADING_ZERO_UNDASHED = "0d470a25041648a1b7a62a27aa5eb251";
 
-    @Test
+  private static final UUID TEST_OFFLINE_PLAYER_UUID = UUID
-    void generateOfflinePlayerUuid() {
+      .fromString("708f6260-183d-3912-bbde-5e279a5e739a");
-        assertEquals(TEST_OFFLINE_PLAYER_UUID, UuidUtils.generateOfflinePlayerUuid(TEST_OFFLINE_PLAYER), "UUIDs do not match");
+  private static final String TEST_OFFLINE_PLAYER = "tuxed";
-    }
 
-    @Test
+  @Test
-    void fromUndashed() {
+  void generateOfflinePlayerUuid() {
-        assertEquals(EXPECTED_DASHED_UUID, UuidUtils.fromUndashed(ACTUAL_UNDASHED_UUID), "UUIDs do not match");
+    assertEquals(TEST_OFFLINE_PLAYER_UUID, UuidUtils.generateOfflinePlayerUuid(TEST_OFFLINE_PLAYER),
-    }
+        "UUIDs do not match");
+  }
 
-    @Test
+  @Test
-    void toUndashed() {
+  void fromUndashed() {
-        assertEquals(ACTUAL_UNDASHED_UUID, UuidUtils.toUndashed(EXPECTED_DASHED_UUID), "UUIDs do not match");
+    assertEquals(EXPECTED_DASHED_UUID, UuidUtils.fromUndashed(ACTUAL_UNDASHED_UUID),
-    }
+        "UUIDs do not match");
+  }
 
-    @Test
+  @Test
-    void zeroUuidIssue109() {
+  void toUndashed() {
-        assertEquals(ISSUE_109_ZERO_UUID, UuidUtils.fromUndashed(ISSUE_109_ZERO_UUID_UNDASHED), "UUIDs do not match");
+    assertEquals(ACTUAL_UNDASHED_UUID, UuidUtils.toUndashed(EXPECTED_DASHED_UUID),
-        assertEquals(ISSUE_109_ZERO_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ZERO_UUID), "UUIDs do not match");
+        "UUIDs do not match");
-    }
+  }
 
-    @Test
+  @Test
-    void leadingZeroUuidIssue109() {
+  void zeroUuidIssue109() {
-        assertEquals(ISSUE_109_LEADING_ZERO_UUID, UuidUtils.fromUndashed(ISSUE_109_LEADING_ZERO_UNDASHED), "UUIDs do not match");
+    assertEquals(ISSUE_109_ZERO_UUID, UuidUtils.fromUndashed(ISSUE_109_ZERO_UUID_UNDASHED),
-        assertEquals(ISSUE_109_LEADING_ZERO_UNDASHED, UuidUtils.toUndashed(ISSUE_109_LEADING_ZERO_UUID), "UUIDs do not match");
+        "UUIDs do not match");
-    }
+    assertEquals(ISSUE_109_ZERO_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ZERO_UUID),
+        "UUIDs do not match");
+  }
 
-    @Test
+  @Test
-    void oneUuidLsbIssue109() {
+  void leadingZeroUuidIssue109() {
-        assertEquals(ISSUE_109_ONE_LSB_UUID, UuidUtils.fromUndashed(ISSUE_109_ONE_LSB_UUID_UNDASHED), "UUIDs do not match");
+    assertEquals(ISSUE_109_LEADING_ZERO_UUID,
-        assertEquals(ISSUE_109_ONE_LSB_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ONE_LSB_UUID), "UUIDs do not match");
+        UuidUtils.fromUndashed(ISSUE_109_LEADING_ZERO_UNDASHED), "UUIDs do not match");
-    }
+    assertEquals(ISSUE_109_LEADING_ZERO_UNDASHED, UuidUtils.toUndashed(ISSUE_109_LEADING_ZERO_UUID),
+        "UUIDs do not match");
+  }
 
-    @Test
+  @Test
-    void oneUuidMsbAndLsbIssue109() {
+  void oneUuidLsbIssue109() {
-        assertEquals(ISSUE_109_ONE_MLSB_UUID, UuidUtils.fromUndashed(ISSUE_109_ONE_MLSB_UUID_UNDASHED), "UUIDs do not match");
+    assertEquals(ISSUE_109_ONE_LSB_UUID, UuidUtils.fromUndashed(ISSUE_109_ONE_LSB_UUID_UNDASHED),
-        assertEquals(ISSUE_109_ONE_MLSB_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ONE_MLSB_UUID), "UUIDs do not match");
+        "UUIDs do not match");
-    }
+    assertEquals(ISSUE_109_ONE_LSB_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ONE_LSB_UUID),
+        "UUIDs do not match");
+  }
+
+  @Test
+  void oneUuidMsbAndLsbIssue109() {
+    assertEquals(ISSUE_109_ONE_MLSB_UUID, UuidUtils.fromUndashed(ISSUE_109_ONE_MLSB_UUID_UNDASHED),
+        "UUIDs do not match");
+    assertEquals(ISSUE_109_ONE_MLSB_UUID_UNDASHED, UuidUtils.toUndashed(ISSUE_109_ONE_MLSB_UUID),
+        "UUIDs do not match");
+  }
 }

config/checkstyle/checkstyle.xml

@@ -0,0 +1,256 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+  "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+  "https://checkstyle.org/dtds/configuration_1_3.dtd">
+
+<!--
+    Checkstyle configuration that checks the Google coding conventions from Google Java Style
+    that can be found at https://google.github.io/styleguide/javaguide.html.
+
+    Checkstyle is very configurable. Be sure to read the documentation at
+    http://checkstyle.sf.net (or in your downloaded distribution).
+
+    To completely disable a check, just comment it out or delete it from the file.
+
+    Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
+ -->
+
+<module name="Checker">
+  <property name="charset" value="UTF-8"/>
+
+  <property name="severity" value="warning"/>
+
+  <property name="fileExtensions" value="java, properties, xml"/>
+  <!-- Checks for whitespace                               -->
+  <!-- See http://checkstyle.sf.net/config_whitespace.html -->
+  <module name="FileTabCharacter">
+    <property name="eachLine" value="true"/>
+  </module>
+
+  <module name="TreeWalker">
+    <module name="OuterTypeFilename"/>
+    <module name="IllegalTokenText">
+      <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
+      <property name="format"
+        value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
+      <property name="message"
+        value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
+    </module>
+    <module name="AvoidEscapedUnicodeCharacters">
+      <property name="allowEscapesForControlCharacters" value="true"/>
+      <property name="allowByTailComment" value="true"/>
+      <property name="allowNonPrintableEscapes" value="true"/>
+    </module>
+    <module name="LineLength">
+      <property name="max" value="100"/>
+      <property name="ignorePattern"
+        value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
+    </module>
+    <module name="AvoidStarImport"/>
+    <module name="OneTopLevelClass"/>
+    <module name="NoLineWrap"/>
+    <module name="EmptyBlock">
+      <property name="option" value="TEXT"/>
+      <property name="tokens"
+        value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
+    </module>
+    <module name="NeedBraces"/>
+    <module name="LeftCurly"/>
+    <module name="RightCurly">
+      <property name="id" value="RightCurlySame"/>
+      <property name="tokens"
+        value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE,
+                    LITERAL_DO"/>
+    </module>
+    <module name="RightCurly">
+      <property name="id" value="RightCurlyAlone"/>
+      <property name="option" value="alone"/>
+      <property name="tokens"
+        value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,
+                    INSTANCE_INIT"/>
+    </module>
+    <module name="WhitespaceAround">
+      <property name="allowEmptyConstructors" value="true"/>
+      <property name="allowEmptyMethods" value="true"/>
+      <property name="allowEmptyTypes" value="true"/>
+      <property name="allowEmptyLoops" value="true"/>
+      <message key="ws.notFollowed"
+        value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
+      <message key="ws.notPreceded"
+        value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
+    </module>
+    <module name="OneStatementPerLine"/>
+    <module name="MultipleVariableDeclarations"/>
+    <module name="ArrayTypeStyle"/>
+    <module name="MissingSwitchDefault"/>
+    <module name="FallThrough"/>
+    <module name="UpperEll"/>
+    <module name="ModifierOrder"/>
+    <module name="EmptyLineSeparator">
+      <property name="allowNoEmptyLineBetweenFields" value="true"/>
+    </module>
+    <module name="SeparatorWrap">
+      <property name="id" value="SeparatorWrapDot"/>
+      <property name="tokens" value="DOT"/>
+      <property name="option" value="nl"/>
+    </module>
+    <module name="SeparatorWrap">
+      <property name="id" value="SeparatorWrapComma"/>
+      <property name="tokens" value="COMMA"/>
+      <property name="option" value="EOL"/>
+    </module>
+    <module name="SeparatorWrap">
+      <!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/258 -->
+      <property name="id" value="SeparatorWrapEllipsis"/>
+      <property name="tokens" value="ELLIPSIS"/>
+      <property name="option" value="EOL"/>
+    </module>
+    <module name="SeparatorWrap">
+      <!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/259 -->
+      <property name="id" value="SeparatorWrapArrayDeclarator"/>
+      <property name="tokens" value="ARRAY_DECLARATOR"/>
+      <property name="option" value="EOL"/>
+    </module>
+    <module name="SeparatorWrap">
+      <property name="id" value="SeparatorWrapMethodRef"/>
+      <property name="tokens" value="METHOD_REF"/>
+      <property name="option" value="nl"/>
+    </module>
+    <module name="PackageName">
+      <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
+      <message key="name.invalidPattern"
+        value="Package name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="TypeName">
+      <message key="name.invalidPattern"
+        value="Type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="MemberName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+      <message key="name.invalidPattern"
+        value="Member name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="ParameterName">
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern"
+        value="Parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="LambdaParameterName">
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern"
+        value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="CatchParameterName">
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern"
+        value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="LocalVariableName">
+      <property name="tokens" value="VARIABLE_DEF"/>
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern"
+        value="Local variable name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="ClassTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+        value="Class type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="MethodTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+        value="Method type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="InterfaceTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+        value="Interface type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="NoFinalizer"/>
+    <module name="GenericWhitespace">
+      <message key="ws.followed"
+        value="GenericWhitespace ''{0}'' is followed by whitespace."/>
+      <message key="ws.preceded"
+        value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
+      <message key="ws.illegalFollow"
+        value="GenericWhitespace ''{0}'' should followed by whitespace."/>
+      <message key="ws.notPreceded"
+        value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
+    </module>
+    <module name="Indentation">
+      <property name="basicOffset" value="2"/>
+      <property name="braceAdjustment" value="0"/>
+      <property name="caseIndent" value="2"/>
+      <property name="throwsIndent" value="4"/>
+      <property name="lineWrappingIndentation" value="4"/>
+      <property name="arrayInitIndent" value="2"/>
+    </module>
+    <module name="AbbreviationAsWordInName">
+      <property name="ignoreFinal" value="false"/>
+      <property name="allowedAbbreviationLength" value="1"/>
+    </module>
+    <module name="OverloadMethodsDeclarationOrder"/>
+    <module name="VariableDeclarationUsageDistance"/>
+    <module name="CustomImportOrder">
+      <property name="sortImportsInGroupAlphabetically" value="true"/>
+      <property name="separateLineBetweenGroups" value="true"/>
+      <property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>
+    </module>
+    <module name="MethodParamPad"/>
+    <module name="NoWhitespaceBefore">
+      <property name="tokens"
+        value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>
+      <property name="allowLineBreaks" value="true"/>
+    </module>
+    <module name="ParenPad"/>
+    <module name="OperatorWrap">
+      <property name="option" value="NL"/>
+      <property name="tokens"
+        value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,
+                    LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="id" value="AnnotationLocationMostCases"/>
+      <property name="tokens"
+        value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="id" value="AnnotationLocationVariables"/>
+      <property name="tokens" value="VARIABLE_DEF"/>
+      <property name="allowSamelineMultipleAnnotations" value="true"/>
+    </module>
+    <module name="NonEmptyAtclauseDescription"/>
+    <module name="JavadocTagContinuationIndentation"/>
+    <module name="SummaryJavadoc">
+      <property name="forbiddenSummaryFragments"
+        value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
+    </module>
+    <module name="JavadocParagraph"/>
+    <module name="AtclauseOrder">
+      <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
+      <property name="target"
+        value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
+    </module>
+    <module name="JavadocMethod">
+      <property name="scope" value="public"/>
+      <property name="allowMissingParamTags" value="true"/>
+      <property name="allowMissingThrowsTags" value="true"/>
+      <property name="allowMissingReturnTag" value="true"/>
+      <property name="minLineCount" value="2"/>
+      <property name="allowedAnnotations" value="Override, Test"/>
+      <property name="allowThrowsTagsForSubclasses" value="true"/>
+    </module>
+    <module name="MethodName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
+      <message key="name.invalidPattern"
+        value="Method name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="SingleLineJavadoc">
+      <property name="ignoreInlineTags" value="false"/>
+    </module>
+    <module name="EmptyCatchBlock">
+      <property name="exceptionVariableName" value="expected"/>
+    </module>
+    <module name="CommentsIndentation"/>
+  </module>
+</module>

gradle/checkerframework.gradle

@@ -25,7 +25,7 @@ dependencies {
         implementation "org.checkerframework:checker-qual:${checkerFrameworkVersion}"
     } else if (System.getenv("CHECKERFRAMEWORK") == null) {
         throw new GradleException("Environment variable CHECKERFRAMEWORK is not set")
-    } else if (! file(System.getenv("CHECKERFRAMEWORK")).exists()) {
+    } else if (!file(System.getenv("CHECKERFRAMEWORK")).exists()) {
         throw new GradleException("Environment variable CHECKERFRAMEWORK is set to non-existent directory " + System.getenv("CHECKERFRAMEWORK"));
     } else {
         ext.checkerframeworkdist = "$System.env.CHECKERFRAMEWORK/checker/dist"

gradle/checkstyle.gradle

@@ -0,0 +1,4 @@
+checkstyle {
+    toolVersion '8.14'
+    configFile new File(project.rootDir, ['config', 'checkstyle', 'checkstyle.xml'].join(File.separator))
+}

native/build.gradle

@@ -1,8 +1,10 @@
 plugins {
     id 'java'
+    id 'checkstyle'
 }
 
 apply from: '../gradle/checkerframework.gradle'
+apply from: '../gradle/checkstyle.gradle'
 
 dependencies {
     compile "com.google.guava:guava:${guavaVersion}"

native/src/main/java/com/velocitypowered/natives/Disposable.java

@@ -1,13 +1,16 @@
 package com.velocitypowered.natives;
 
 /**
- * This marker interface indicates that this object should be explicitly disposed before the object can no longer be used.
+ * This marker interface indicates that this object should be explicitly disposed before the object
- * Not disposing these objects will likely leak native resources and eventually lead to resource exhaustion.
+ * can no longer be used. Not disposing these objects will likely leak native resources and
+ * eventually lead to resource exhaustion.
  */
 public interface Disposable {
-    /**
+
-     * Disposes this object. After this call returns, any use of this object becomes invalid. Multiple calls to
+  /**
-     * this function should be safe: there should be no side-effects once an object is disposed.
+   * Disposes this object. After this call returns, any use of this object becomes invalid. Multiple
-     */
+   * calls to this function should be safe: there should be no side-effects once an object is
-    void dispose();
+   * disposed.
+   */
+  void dispose();
 }

native/src/main/java/com/velocitypowered/natives/compression/JavaVelocityCompressor.java

@@ -2,62 +2,62 @@ package com.velocitypowered.natives.compression;
 
 import com.google.common.base.Preconditions;
 import io.netty.buffer.ByteBuf;
-
 import java.util.zip.DataFormatException;
 import java.util.zip.Deflater;
 import java.util.zip.Inflater;
 
 public class JavaVelocityCompressor implements VelocityCompressor {
-    public static final VelocityCompressorFactory FACTORY = JavaVelocityCompressor::new;
 
-    private final Deflater deflater;
+  public static final VelocityCompressorFactory FACTORY = JavaVelocityCompressor::new;
-    private final Inflater inflater;
-    private final byte[] buf;
-    private boolean disposed = false;
 
-    private JavaVelocityCompressor(int level) {
+  private final Deflater deflater;
-        this.deflater = new Deflater(level);
+  private final Inflater inflater;
-        this.inflater = new Inflater();
+  private final byte[] buf;
-        this.buf = new byte[ZLIB_BUFFER_SIZE];
+  private boolean disposed = false;
+
+  private JavaVelocityCompressor(int level) {
+    this.deflater = new Deflater(level);
+    this.inflater = new Inflater();
+    this.buf = new byte[ZLIB_BUFFER_SIZE];
+  }
+
+  @Override
+  public void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+    ensureNotDisposed();
+
+    byte[] inData = new byte[source.readableBytes()];
+    source.readBytes(inData);
+    inflater.setInput(inData);
+    while (!inflater.finished()) {
+      int read = inflater.inflate(buf);
+      destination.writeBytes(buf, 0, read);
     }
+    inflater.reset();
+  }
 
-    @Override
+  @Override
-    public void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+  public void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
-        ensureNotDisposed();
+    ensureNotDisposed();
 
-        byte[] inData = new byte[source.readableBytes()];
+    byte[] inData = new byte[source.readableBytes()];
-        source.readBytes(inData);
+    source.readBytes(inData);
-        inflater.setInput(inData);
+    deflater.setInput(inData);
-        while (!inflater.finished()) {
+    deflater.finish();
-            int read = inflater.inflate(buf);
+    while (!deflater.finished()) {
-            destination.writeBytes(buf, 0, read);
+      int bytes = deflater.deflate(buf);
-        }
+      destination.writeBytes(buf, 0, bytes);
-        inflater.reset();
     }
+    deflater.reset();
+  }
 
-    @Override
+  @Override
-    public void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+  public void dispose() {
-        ensureNotDisposed();
+    disposed = true;
+    deflater.end();
+    inflater.end();
+  }
 
-        byte[] inData = new byte[source.readableBytes()];
+  private void ensureNotDisposed() {
-        source.readBytes(inData);
+    Preconditions.checkState(!disposed, "Object already disposed");
-        deflater.setInput(inData);
+  }
-        deflater.finish();
-        while (!deflater.finished()) {
-            int bytes = deflater.deflate(buf);
-            destination.writeBytes(buf, 0, bytes);
-        }
-        deflater.reset();
-    }
-
-    @Override
-    public void dispose() {
-        disposed = true;
-        deflater.end();
-        inflater.end();
-    }
-
-    private void ensureNotDisposed() {
-        Preconditions.checkState(!disposed, "Object already disposed");
-    }
 }

native/src/main/java/com/velocitypowered/natives/compression/NativeVelocityCompressor.java

@@ -2,75 +2,78 @@ package com.velocitypowered.natives.compression;
 
 import com.google.common.base.Preconditions;
 import io.netty.buffer.ByteBuf;
-
 import java.util.zip.DataFormatException;
 
 public class NativeVelocityCompressor implements VelocityCompressor {
-    public static final VelocityCompressorFactory FACTORY = NativeVelocityCompressor::new;
 
-    private final NativeZlibInflate inflate = new NativeZlibInflate();
+  public static final VelocityCompressorFactory FACTORY = NativeVelocityCompressor::new;
-    private final long inflateCtx;
-    private final NativeZlibDeflate deflate = new NativeZlibDeflate();
-    private final long deflateCtx;
-    private boolean disposed = false;
 
-    private NativeVelocityCompressor(int level) {
+  private final NativeZlibInflate inflate = new NativeZlibInflate();
-        this.inflateCtx = inflate.init();
+  private final long inflateCtx;
-        this.deflateCtx = deflate.init(level);
+  private final NativeZlibDeflate deflate = new NativeZlibDeflate();
+  private final long deflateCtx;
+  private boolean disposed = false;
+
+  private NativeVelocityCompressor(int level) {
+    this.inflateCtx = inflate.init();
+    this.deflateCtx = deflate.init(level);
+  }
+
+  @Override
+  public void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+    ensureNotDisposed();
+    source.memoryAddress();
+    destination.memoryAddress();
+
+    while (!inflate.finished && source.isReadable()) {
+      if (!destination.isWritable()) {
+        destination.ensureWritable(ZLIB_BUFFER_SIZE);
+      }
+      int produced = inflate.process(inflateCtx, source.memoryAddress() + source.readerIndex(),
+          source.readableBytes(),
+          destination.memoryAddress() + destination.writerIndex(), destination.writableBytes());
+      source.readerIndex(source.readerIndex() + inflate.consumed);
+      destination.writerIndex(destination.writerIndex() + produced);
     }
 
-    @Override
+    inflate.reset(inflateCtx);
-    public void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+    inflate.consumed = 0;
-        ensureNotDisposed();
+    inflate.finished = false;
-        source.memoryAddress();
+  }
-        destination.memoryAddress();
 
-        while (!inflate.finished && source.isReadable()) {
+  @Override
-            if (!destination.isWritable()) {
+  public void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
-                destination.ensureWritable(ZLIB_BUFFER_SIZE);
+    ensureNotDisposed();
-            }
+    source.memoryAddress();
-            int produced = inflate.process(inflateCtx, source.memoryAddress() + source.readerIndex(), source.readableBytes(),
+    destination.memoryAddress();
-                    destination.memoryAddress() + destination.writerIndex(), destination.writableBytes());
-            source.readerIndex(source.readerIndex() + inflate.consumed);
-            destination.writerIndex(destination.writerIndex() + produced);
-        }
 
-        inflate.reset(inflateCtx);
+    while (!deflate.finished) {
-        inflate.consumed = 0;
+      if (!destination.isWritable()) {
-        inflate.finished = false;
+        destination.ensureWritable(ZLIB_BUFFER_SIZE);
+      }
+      int produced = deflate.process(deflateCtx, source.memoryAddress() + source.readerIndex(),
+          source.readableBytes(),
+          destination.memoryAddress() + destination.writerIndex(), destination.writableBytes(),
+          !source.isReadable());
+      source.readerIndex(source.readerIndex() + deflate.consumed);
+      destination.writerIndex(destination.writerIndex() + produced);
     }
 
-    @Override
+    deflate.reset(deflateCtx);
-    public void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException {
+    deflate.consumed = 0;
-        ensureNotDisposed();
+    deflate.finished = false;
-        source.memoryAddress();
+  }
-        destination.memoryAddress();
 
-        while (!deflate.finished) {
+  private void ensureNotDisposed() {
-            if (!destination.isWritable()) {
+    Preconditions.checkState(!disposed, "Object already disposed");
-                destination.ensureWritable(ZLIB_BUFFER_SIZE);
+  }
-            }
-            int produced = deflate.process(deflateCtx, source.memoryAddress() + source.readerIndex(), source.readableBytes(),
-                    destination.memoryAddress() + destination.writerIndex(), destination.writableBytes(), !source.isReadable());
-            source.readerIndex(source.readerIndex() + deflate.consumed);
-            destination.writerIndex(destination.writerIndex() + produced);
-        }
 
-        deflate.reset(deflateCtx);
+  @Override
-        deflate.consumed = 0;
+  public void dispose() {
-        deflate.finished = false;
+    if (!disposed) {
-    }
+      inflate.free(inflateCtx);
-
+      deflate.free(deflateCtx);
-    private void ensureNotDisposed() {
-        Preconditions.checkState(!disposed, "Object already disposed");
-    }
-
-    @Override
-    public void dispose() {
-        if (!disposed) {
-            inflate.free(inflateCtx);
-            deflate.free(deflateCtx);
-        }
-        disposed = true;
     }
+    disposed = true;
+  }
 }

native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java

@@ -4,21 +4,23 @@ package com.velocitypowered.natives.compression;
  * Represents a native interface for zlib's deflate functions.
  */
 class NativeZlibDeflate {
-    boolean finished;
-    int consumed;
 
-    native long init(int level);
+  boolean finished;
+  int consumed;
 
-    native long free(long ctx);
+  native long init(int level);
 
-    native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress, int destinationLength,
+  native long free(long ctx);
-                       boolean flush);
 
-    native void reset(long ctx);
+  native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
+      int destinationLength,
+      boolean flush);
 
-    static {
+  native void reset(long ctx);
-        initIDs();
-    }
 
-    private static native void initIDs();
+  static {
+    initIDs();
+  }
+
+  private static native void initIDs();
 }

native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java

@@ -4,20 +4,22 @@ package com.velocitypowered.natives.compression;
  * Represents a native interface for zlib's inflate functions.
  */
 class NativeZlibInflate {
-    boolean finished;
-    int consumed;
 
-    native long init();
+  boolean finished;
+  int consumed;
 
-    native long free(long ctx);
+  native long init();
 
-    native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress, int destinationLength);
+  native long free(long ctx);
 
-    native void reset(long ctx);
+  native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
+      int destinationLength);
 
-    static {
+  native void reset(long ctx);
-        initIDs();
-    }
 
-    private static native void initIDs();
+  static {
+    initIDs();
+  }
+
+  private static native void initIDs();
 }

native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressor.java

@@ -2,19 +2,19 @@ package com.velocitypowered.natives.compression;
 
 import com.velocitypowered.natives.Disposable;
 import io.netty.buffer.ByteBuf;
-
 import java.util.zip.DataFormatException;
 
 /**
  * Provides an interface to inflate and deflate {@link ByteBuf}s using zlib.
  */
 public interface VelocityCompressor extends Disposable {
-    /**
-     * The default preferred output buffer size for zlib.
-     */
-    int ZLIB_BUFFER_SIZE = 8192;
 
-    void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException;
+  /**
+   * The default preferred output buffer size for zlib.
+   */
+  int ZLIB_BUFFER_SIZE = 8192;
 
-    void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException;
+  void inflate(ByteBuf source, ByteBuf destination) throws DataFormatException;
+
+  void deflate(ByteBuf source, ByteBuf destination) throws DataFormatException;
 }

native/src/main/java/com/velocitypowered/natives/compression/VelocityCompressorFactory.java

@@ -1,5 +1,6 @@
 package com.velocitypowered.natives.compression;
 
 public interface VelocityCompressorFactory {
-    VelocityCompressor create(int level);
+
+  VelocityCompressor create(int level);
 }

native/src/main/java/com/velocitypowered/natives/encryption/JavaVelocityCipher.java

@@ -2,53 +2,54 @@ package com.velocitypowered.natives.encryption;
 
 import com.google.common.base.Preconditions;
 import io.netty.buffer.ByteBuf;
-
+import java.security.GeneralSecurityException;
 import javax.crypto.Cipher;
 import javax.crypto.SecretKey;
 import javax.crypto.ShortBufferException;
 import javax.crypto.spec.IvParameterSpec;
-import java.security.GeneralSecurityException;
 
 public class JavaVelocityCipher implements VelocityCipher {
-    public static final VelocityCipherFactory FACTORY = new VelocityCipherFactory() {
-        @Override
-        public VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException {
-            return new JavaVelocityCipher(true, key);
-        }
 
-        @Override
+  public static final VelocityCipherFactory FACTORY = new VelocityCipherFactory() {
-        public VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException {
+    @Override
-            return new JavaVelocityCipher(false, key);
+    public VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException {
-        }
+      return new JavaVelocityCipher(true, key);
-    };
-
-    private final Cipher cipher;
-    private boolean disposed = false;
-
-    private JavaVelocityCipher(boolean encrypt, SecretKey key) throws GeneralSecurityException {
-        this.cipher = Cipher.getInstance("AES/CFB8/NoPadding");
-        this.cipher.init(encrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, key, new IvParameterSpec(key.getEncoded()));
     }
 
     @Override
-    public void process(ByteBuf source, ByteBuf destination) throws ShortBufferException {
+    public VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException {
-        ensureNotDisposed();
+      return new JavaVelocityCipher(false, key);
-
-        byte[] sourceAsBytes = new byte[source.readableBytes()];
-        source.readBytes(sourceAsBytes);
-
-        int outputSize = cipher.getOutputSize(sourceAsBytes.length);
-        byte[] destinationBytes = new byte[outputSize];
-        cipher.update(sourceAsBytes, 0, sourceAsBytes.length, destinationBytes);
-        destination.writeBytes(destinationBytes);
     }
+  };
 
-    @Override
+  private final Cipher cipher;
-    public void dispose() {
+  private boolean disposed = false;
-        disposed = true;
-    }
 
-    private void ensureNotDisposed() {
+  private JavaVelocityCipher(boolean encrypt, SecretKey key) throws GeneralSecurityException {
-        Preconditions.checkState(!disposed, "Object already disposed");
+    this.cipher = Cipher.getInstance("AES/CFB8/NoPadding");
-    }
+    this.cipher.init(encrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, key,
+        new IvParameterSpec(key.getEncoded()));
+  }
+
+  @Override
+  public void process(ByteBuf source, ByteBuf destination) throws ShortBufferException {
+    ensureNotDisposed();
+
+    byte[] sourceAsBytes = new byte[source.readableBytes()];
+    source.readBytes(sourceAsBytes);
+
+    int outputSize = cipher.getOutputSize(sourceAsBytes.length);
+    byte[] destinationBytes = new byte[outputSize];
+    cipher.update(sourceAsBytes, 0, sourceAsBytes.length, destinationBytes);
+    destination.writeBytes(destinationBytes);
+  }
+
+  @Override
+  public void dispose() {
+    disposed = true;
+  }
+
+  private void ensureNotDisposed() {
+    Preconditions.checkState(!disposed, "Object already disposed");
+  }
 }

native/src/main/java/com/velocitypowered/natives/encryption/MbedtlsAesImpl.java

@@ -1,9 +1,11 @@
 package com.velocitypowered.natives.encryption;
 
 public class MbedtlsAesImpl {
-    native long init(byte[] key);
 
-    native void process(long ctx, long sourceAddress, int sourceLength, long destinationAddress, boolean encrypt);
+  native long init(byte[] key);
 
-    native void free(long ptr);
+  native void process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
+      boolean encrypt);
+
+  native void free(long ptr);
 }

native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java

@@ -1,55 +1,55 @@
 package com.velocitypowered.natives.encryption;
 
 import io.netty.buffer.ByteBuf;
-
+import java.security.GeneralSecurityException;
 import javax.crypto.SecretKey;
 import javax.crypto.ShortBufferException;
-import java.security.GeneralSecurityException;
 
 public class NativeVelocityCipher implements VelocityCipher {
-    public static final VelocityCipherFactory FACTORY = new VelocityCipherFactory() {
-        @Override
-        public VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException {
-            return new NativeVelocityCipher(true, key);
-        }
 
-        @Override
+  public static final VelocityCipherFactory FACTORY = new VelocityCipherFactory() {
-        public VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException {
+    @Override
-            return new NativeVelocityCipher(false, key);
+    public VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException {
-        }
+      return new NativeVelocityCipher(true, key);
-    };
-    private static final MbedtlsAesImpl impl = new MbedtlsAesImpl();
-
-    private final long ctx;
-    private final boolean encrypt;
-    private boolean disposed = false;
-
-    private NativeVelocityCipher(boolean encrypt, SecretKey key) {
-        this.encrypt = encrypt;
-        this.ctx = impl.init(key.getEncoded());
     }
 
     @Override
-    public void process(ByteBuf source, ByteBuf destination) throws ShortBufferException {
+    public VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException {
-        source.memoryAddress();
+      return new NativeVelocityCipher(false, key);
-        destination.memoryAddress();
-
-        // The exact amount we read in is also the amount we write out.
-        int len = source.readableBytes();
-        destination.ensureWritable(len);
-
-        impl.process(ctx, source.memoryAddress() + source.readerIndex(), len,
-                destination.memoryAddress() + destination.writerIndex(), encrypt);
-
-        source.skipBytes(len);
-        destination.writerIndex(destination.writerIndex() + len);
     }
+  };
+  private static final MbedtlsAesImpl impl = new MbedtlsAesImpl();
 
-    @Override
+  private final long ctx;
-    public void dispose() {
+  private final boolean encrypt;
-        if (!disposed) {
+  private boolean disposed = false;
-            impl.free(ctx);
+
-        }
+  private NativeVelocityCipher(boolean encrypt, SecretKey key) {
-        disposed = true;
+    this.encrypt = encrypt;
+    this.ctx = impl.init(key.getEncoded());
+  }
+
+  @Override
+  public void process(ByteBuf source, ByteBuf destination) throws ShortBufferException {
+    source.memoryAddress();
+    destination.memoryAddress();
+
+    // The exact amount we read in is also the amount we write out.
+    int len = source.readableBytes();
+    destination.ensureWritable(len);
+
+    impl.process(ctx, source.memoryAddress() + source.readerIndex(), len,
+        destination.memoryAddress() + destination.writerIndex(), encrypt);
+
+    source.skipBytes(len);
+    destination.writerIndex(destination.writerIndex() + len);
+  }
+
+  @Override
+  public void dispose() {
+    if (!disposed) {
+      impl.free(ctx);
     }
+    disposed = true;
+  }
 }

native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipher.java

@@ -2,9 +2,9 @@ package com.velocitypowered.natives.encryption;
 
 import com.velocitypowered.natives.Disposable;
 import io.netty.buffer.ByteBuf;
-
 import javax.crypto.ShortBufferException;
 
 public interface VelocityCipher extends Disposable {
-    void process(ByteBuf source, ByteBuf destination) throws ShortBufferException;
+
+  void process(ByteBuf source, ByteBuf destination) throws ShortBufferException;
 }

native/src/main/java/com/velocitypowered/natives/encryption/VelocityCipherFactory.java

@@ -1,10 +1,11 @@
 package com.velocitypowered.natives.encryption;
 
-import javax.crypto.SecretKey;
 import java.security.GeneralSecurityException;
+import javax.crypto.SecretKey;
 
 public interface VelocityCipherFactory {
-    VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException;
 
-    VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException;
+  VelocityCipher forEncryption(SecretKey key) throws GeneralSecurityException;
+
+  VelocityCipher forDecryption(SecretKey key) throws GeneralSecurityException;
 }

native/src/main/java/com/velocitypowered/natives/util/NativeCodeLoader.java

@@ -1,81 +1,85 @@
 package com.velocitypowered.natives.util;
 
-import org.checkerframework.checker.nullness.qual.Nullable;
-
 import java.util.List;
 import java.util.function.BooleanSupplier;
 import java.util.function.Supplier;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 public final class NativeCodeLoader<T> implements Supplier<T> {
-    private final Variant<T> selected;
 
-    NativeCodeLoader(List<Variant<T>> variants) {
+  private final Variant<T> selected;
-        this.selected = getVariant(variants);
+
+  NativeCodeLoader(List<Variant<T>> variants) {
+    this.selected = getVariant(variants);
+  }
+
+  @Override
+  public T get() {
+    return selected.object;
+  }
+
+  private static <T> Variant<T> getVariant(List<Variant<T>> variants) {
+    for (Variant<T> variant : variants) {
+      T got = variant.get();
+      if (got == null) {
+        continue;
+      }
+      return variant;
+    }
+    throw new IllegalArgumentException("Can't find any suitable variants");
+  }
+
+  public String getLoadedVariant() {
+    return selected.name;
+  }
+
+  static class Variant<T> {
+
+    private Status status;
+    private final Runnable setup;
+    private final String name;
+    private final T object;
+
+    Variant(BooleanSupplier possiblyAvailable, Runnable setup, String name, T object) {
+      this.status =
+          possiblyAvailable.getAsBoolean() ? Status.POSSIBLY_AVAILABLE : Status.NOT_AVAILABLE;
+      this.setup = setup;
+      this.name = name;
+      this.object = object;
     }
 
-    @Override
+    public @Nullable T get() {
-    public T get() {
+      if (status == Status.NOT_AVAILABLE || status == Status.SETUP_FAILURE) {
-        return selected.object;
+        return null;
-    }
+      }
 
-    private static <T> Variant<T> getVariant(List<Variant<T>> variants) {
+      // Make sure setup happens only once
-        for (Variant<T> variant : variants) {
+      if (status == Status.POSSIBLY_AVAILABLE) {
-            T got = variant.get();
+        try {
-            if (got == null) {
+          setup.run();
-                continue;
+          status = Status.SETUP;
-            }
+        } catch (Exception e) {
-            return variant;
+          status = Status.SETUP_FAILURE;
+          return null;
         }
-        throw new IllegalArgumentException("Can't find any suitable variants");
+      }
+
+      return object;
     }
+  }
 
-    public String getLoadedVariant() {
+  private enum Status {
-        return selected.name;
+    NOT_AVAILABLE,
-    }
+    POSSIBLY_AVAILABLE,
+    SETUP,
+    SETUP_FAILURE
+  }
 
-    static class Variant<T> {
+  static final BooleanSupplier MACOS = () ->
-        private Status status;
+      System.getProperty("os.name", "").equalsIgnoreCase("Mac OS X") &&
-        private final Runnable setup;
+          System.getProperty("os.arch").equals("x86_64");
-        private final String name;
+  static final BooleanSupplier LINUX = () ->
-        private final T object;
+      System.getProperties().getProperty("os.name", "").equalsIgnoreCase("Linux") &&
-
+          System.getProperty("os.arch").equals("amd64");
-        Variant(BooleanSupplier possiblyAvailable, Runnable setup, String name, T object) {
+  static final BooleanSupplier ALWAYS = () -> true;
-            this.status = possiblyAvailable.getAsBoolean() ? Status.POSSIBLY_AVAILABLE : Status.NOT_AVAILABLE;
-            this.setup = setup;
-            this.name = name;
-            this.object = object;
-        }
-
-        public @Nullable T get() {
-            if (status == Status.NOT_AVAILABLE || status == Status.SETUP_FAILURE) {
-                return null;
-            }
-
-            // Make sure setup happens only once
-            if (status == Status.POSSIBLY_AVAILABLE) {
-                try {
-                    setup.run();
-                    status = Status.SETUP;
-                } catch (Exception e) {
-                    status = Status.SETUP_FAILURE;
-                    return null;
-                }
-            }
-
-            return object;
-        }
-    }
-
-    private enum Status {
-        NOT_AVAILABLE,
-        POSSIBLY_AVAILABLE,
-        SETUP,
-        SETUP_FAILURE
-    }
-
-    static final BooleanSupplier MACOS = () -> System.getProperty("os.name", "").equalsIgnoreCase("Mac OS X") &&
-            System.getProperty("os.arch").equals("x86_64");
-    static final BooleanSupplier LINUX = () -> System.getProperties().getProperty("os.name", "").equalsIgnoreCase("Linux") &&
-            System.getProperty("os.arch").equals("amd64");
-    static final BooleanSupplier ALWAYS = () -> true;
 }

native/src/main/java/com/velocitypowered/natives/util/Natives.java

@@ -6,7 +6,6 @@ import com.velocitypowered.natives.compression.NativeVelocityCompressor;
 import com.velocitypowered.natives.compression.VelocityCompressorFactory;
 import com.velocitypowered.natives.encryption.JavaVelocityCipher;
 import com.velocitypowered.natives.encryption.VelocityCipherFactory;
-
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
@@ -14,55 +13,58 @@ import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 
 public class Natives {
-    private Natives() {
-        throw new AssertionError();
-    }
 
-    private static Runnable copyAndLoadNative(String path) {
+  private Natives() {
-        return () -> {
+    throw new AssertionError();
-            try {
+  }
-                Path tempFile = Files.createTempFile("native-", path.substring(path.lastIndexOf('.')));
-                InputStream nativeLib = Natives.class.getResourceAsStream(path);
-                if (nativeLib == null) {
-                    throw new IllegalStateException("Native library " + path + " not found.");
-                }
 
-                Files.copy(nativeLib, tempFile, StandardCopyOption.REPLACE_EXISTING);
+  private static Runnable copyAndLoadNative(String path) {
-                Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+    return () -> {
-                    try {
+      try {
-                        Files.deleteIfExists(tempFile);
+        Path tempFile = Files.createTempFile("native-", path.substring(path.lastIndexOf('.')));
-                    } catch (IOException ignored) {
+        InputStream nativeLib = Natives.class.getResourceAsStream(path);
-                        // Well, it doesn't matter...
+        if (nativeLib == null) {
-                    }
+          throw new IllegalStateException("Native library " + path + " not found.");
-                }));
+        }
-                System.load(tempFile.toAbsolutePath().toString());
-            } catch (IOException e) {
-                throw new RuntimeException(e);
-            }
-        };
-    }
 
-    public static final NativeCodeLoader<VelocityCompressorFactory> compressor = new NativeCodeLoader<>(
+        Files.copy(nativeLib, tempFile, StandardCopyOption.REPLACE_EXISTING);
-            ImmutableList.of(
+        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
-                    new NativeCodeLoader.Variant<>(NativeCodeLoader.MACOS,
+          try {
-                            copyAndLoadNative("/macosx/velocity-compress.dylib"), "native (macOS)",
+            Files.deleteIfExists(tempFile);
-                            NativeVelocityCompressor.FACTORY),
+          } catch (IOException ignored) {
-                    new NativeCodeLoader.Variant<>(NativeCodeLoader.LINUX,
+            // Well, it doesn't matter...
-                            copyAndLoadNative("/linux_x64/velocity-compress.so"), "native (Linux amd64)",
+          }
-                            NativeVelocityCompressor.FACTORY),
+        }));
-                    new NativeCodeLoader.Variant<>(NativeCodeLoader.ALWAYS, () -> {}, "Java", JavaVelocityCompressor.FACTORY)
+        System.load(tempFile.toAbsolutePath().toString());
-            )
+      } catch (IOException e) {
-    );
+        throw new RuntimeException(e);
+      }
+    };
+  }
 
-    public static final NativeCodeLoader<VelocityCipherFactory> cipher = new NativeCodeLoader<>(
+  public static final NativeCodeLoader<VelocityCompressorFactory> compressor = new NativeCodeLoader<>(
-            ImmutableList.of(
+      ImmutableList.of(
+          new NativeCodeLoader.Variant<>(NativeCodeLoader.MACOS,
+              copyAndLoadNative("/macosx/velocity-compress.dylib"), "native (macOS)",
+              NativeVelocityCompressor.FACTORY),
+          new NativeCodeLoader.Variant<>(NativeCodeLoader.LINUX,
+              copyAndLoadNative("/linux_x64/velocity-compress.so"), "native (Linux amd64)",
+              NativeVelocityCompressor.FACTORY),
+          new NativeCodeLoader.Variant<>(NativeCodeLoader.ALWAYS, () -> {
+          }, "Java", JavaVelocityCompressor.FACTORY)
+      )
+  );
+
+  public static final NativeCodeLoader<VelocityCipherFactory> cipher = new NativeCodeLoader<>(
+      ImmutableList.of(
                     /*new NativeCodeLoader.Variant<>(NativeCodeLoader.MACOS,
                             copyAndLoadNative("/macosx/velocity-cipher.dylib"), "mbed TLS (macOS)",
                             NativeVelocityCipher.FACTORY),
                     new NativeCodeLoader.Variant<>(NativeCodeLoader.LINUX,
                             copyAndLoadNative("/linux_x64/velocity-cipher.so"), "mbed TLS (Linux amd64)",
                             NativeVelocityCipher.FACTORY),*/
-                    new NativeCodeLoader.Variant<>(NativeCodeLoader.ALWAYS, () -> {}, "Java", JavaVelocityCipher.FACTORY)
+          new NativeCodeLoader.Variant<>(NativeCodeLoader.ALWAYS, () -> {
-            )
+          }, "Java", JavaVelocityCipher.FACTORY)
-    );
+      )
+  );
 }

native/src/test/java/com/velocitypowered/natives/compression/VelocityCompressorTest.java

@@ -1,65 +1,66 @@
 package com.velocitypowered.natives.compression;
 
-import com.velocitypowered.natives.util.Natives;
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufUtil;
-import io.netty.buffer.Unpooled;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.condition.EnabledOnOs;
-
-import java.util.Random;
-import java.util.zip.DataFormatException;
-import java.util.zip.Deflater;
-
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assertions.fail;
 import static org.junit.jupiter.api.condition.OS.LINUX;
 import static org.junit.jupiter.api.condition.OS.MAC;
 
+import com.velocitypowered.natives.util.Natives;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import java.util.Random;
+import java.util.zip.DataFormatException;
+import java.util.zip.Deflater;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledOnOs;
+
 class VelocityCompressorTest {
-    @BeforeAll
+
-    static void checkNatives() {
+  @BeforeAll
-        Natives.compressor.getLoadedVariant();
+  static void checkNatives() {
+    Natives.compressor.getLoadedVariant();
+  }
+
+  @Test
+  @EnabledOnOs({MAC, LINUX})
+  void nativeIntegrityCheck() throws DataFormatException {
+    VelocityCompressor compressor = Natives.compressor.get().create(Deflater.DEFAULT_COMPRESSION);
+    if (compressor instanceof JavaVelocityCompressor) {
+      compressor.dispose();
+      fail("Loaded regular compressor");
     }
+    check(compressor);
+  }
 
-    @Test
+  @Test
-    @EnabledOnOs({ MAC, LINUX })
+  void javaIntegrityCheck() throws DataFormatException {
-    void nativeIntegrityCheck() throws DataFormatException {
+    VelocityCompressor compressor = JavaVelocityCompressor.FACTORY
-        VelocityCompressor compressor = Natives.compressor.get().create(Deflater.DEFAULT_COMPRESSION);
+        .create(Deflater.DEFAULT_COMPRESSION);
-        if (compressor instanceof JavaVelocityCompressor) {
+    check(compressor);
-            compressor.dispose();
+  }
-            fail("Loaded regular compressor");
+
-        }
+  private void check(VelocityCompressor compressor) throws DataFormatException {
-        check(compressor);
+    ByteBuf source = Unpooled.directBuffer();
-    }
+    ByteBuf dest = Unpooled.directBuffer();
-
+    ByteBuf decompressed = Unpooled.directBuffer();
-    @Test
+
-    void javaIntegrityCheck() throws DataFormatException {
+    Random random = new Random(1);
-        VelocityCompressor compressor = JavaVelocityCompressor.FACTORY.create(Deflater.DEFAULT_COMPRESSION);
+    byte[] randomBytes = new byte[1 << 16];
-        check(compressor);
+    random.nextBytes(randomBytes);
-    }
+    source.writeBytes(randomBytes);
-
+
-    private void check(VelocityCompressor compressor) throws DataFormatException {
+    try {
-        ByteBuf source = Unpooled.directBuffer();
+      compressor.deflate(source, dest);
-        ByteBuf dest = Unpooled.directBuffer();
+      compressor.inflate(dest, decompressed);
-        ByteBuf decompressed = Unpooled.directBuffer();
+      source.readerIndex(0);
-
+      assertTrue(ByteBufUtil.equals(source, decompressed));
-        Random random = new Random(1);
+    } finally {
-        byte[] randomBytes = new byte[1 << 16];
+      source.release();
-        random.nextBytes(randomBytes);
+      dest.release();
-        source.writeBytes(randomBytes);
+      decompressed.release();
-
+      compressor.dispose();
-        try {
-            compressor.deflate(source, dest);
-            compressor.inflate(dest, decompressed);
-            source.readerIndex(0);
-            assertTrue(ByteBufUtil.equals(source, decompressed));
-        } finally {
-            source.release();
-            dest.release();
-            decompressed.release();
-            compressor.dispose();
-        }
     }
+  }
 }

native/src/test/java/com/velocitypowered/natives/encryption/VelocityCipherTest.java

@@ -1,71 +1,71 @@
 package com.velocitypowered.natives.encryption;
 
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
 import com.velocitypowered.natives.util.Natives;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufUtil;
 import io.netty.buffer.Unpooled;
+import java.security.GeneralSecurityException;
+import java.util.Random;
+import javax.crypto.spec.SecretKeySpec;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
-import javax.crypto.spec.SecretKeySpec;
-import java.security.GeneralSecurityException;
-import java.util.Random;
-
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.fail;
-
 class VelocityCipherTest {
-    private static final int ENCRYPT_DATA_SIZE = 1 << 16;
 
-    @BeforeAll
+  private static final int ENCRYPT_DATA_SIZE = 1 << 16;
-    static void checkNatives() {
+
-        Natives.cipher.getLoadedVariant();
+  @BeforeAll
+  static void checkNatives() {
+    Natives.cipher.getLoadedVariant();
+  }
+
+  @Test
+  @Disabled
+  void nativeIntegrityCheck() throws GeneralSecurityException {
+    VelocityCipherFactory factory = Natives.cipher.get();
+    if (factory == JavaVelocityCipher.FACTORY) {
+      fail("Loaded regular compressor");
     }
+    check(factory);
+  }
 
-    @Test
+  @Test
-    @Disabled
+  void javaIntegrityCheck() throws GeneralSecurityException {
-    void nativeIntegrityCheck() throws GeneralSecurityException {
+    check(JavaVelocityCipher.FACTORY);
-        VelocityCipherFactory factory = Natives.cipher.get();
+  }
-        if (factory == JavaVelocityCipher.FACTORY) {
+
-            fail("Loaded regular compressor");
+  private void check(VelocityCipherFactory factory) throws GeneralSecurityException {
-        }
+    // Generate a random 16-byte key.
-        check(factory);
+    Random random = new Random(1);
-    }
+    byte[] key = new byte[16];
-
+    random.nextBytes(key);
-    @Test
+
-    void javaIntegrityCheck() throws GeneralSecurityException {
+    VelocityCipher decrypt = factory.forDecryption(new SecretKeySpec(key, "AES"));
-        check(JavaVelocityCipher.FACTORY);
+    VelocityCipher encrypt = factory.forEncryption(new SecretKeySpec(key, "AES"));
-    }
+
-
+    ByteBuf source = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
-    private void check(VelocityCipherFactory factory) throws GeneralSecurityException {
+    ByteBuf dest = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
-        // Generate a random 16-byte key.
+    ByteBuf decryptionBuf = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
-        Random random = new Random(1);
+
-        byte[] key = new byte[16];
+    byte[] randomBytes = new byte[ENCRYPT_DATA_SIZE];
-        random.nextBytes(key);
+    random.nextBytes(randomBytes);
-
+    source.writeBytes(randomBytes);
-        VelocityCipher decrypt = factory.forDecryption(new SecretKeySpec(key, "AES"));
+
-        VelocityCipher encrypt = factory.forEncryption(new SecretKeySpec(key, "AES"));
+    try {
-
+      encrypt.process(source, dest);
-        ByteBuf source = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
+      decrypt.process(dest, decryptionBuf);
-        ByteBuf dest = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
+      source.readerIndex(0);
-        ByteBuf decryptionBuf = Unpooled.directBuffer(ENCRYPT_DATA_SIZE);
+      assertTrue(ByteBufUtil.equals(source, decryptionBuf));
-
+    } finally {
-        byte[] randomBytes = new byte[ENCRYPT_DATA_SIZE];
+      source.release();
-        random.nextBytes(randomBytes);
+      dest.release();
-        source.writeBytes(randomBytes);
+      decryptionBuf.release();
-
+      decrypt.dispose();
-        try {
+      encrypt.dispose();
-            encrypt.process(source, dest);
-            decrypt.process(dest, decryptionBuf);
-            source.readerIndex(0);
-            assertTrue(ByteBufUtil.equals(source, decryptionBuf));
-        } finally {
-            source.release();
-            dest.release();
-            decryptionBuf.release();
-            decrypt.dispose();
-            encrypt.dispose();
-        }
     }
+  }
 }

proxy/build.gradle

@@ -2,17 +2,11 @@ plugins {
     id 'java'
     id 'com.github.johnrengelman.shadow' version '2.0.4'
     id 'de.sebastianboegl.shadow.transformer.log4j' version '2.1.1'
+    id 'checkstyle'
 }
 
 apply from: '../gradle/checkerframework.gradle'
-
+apply from: '../gradle/checkstyle.gradle'
-compileJava {
-    options.compilerArgs += ['-proc:none']
-}
-
-compileTestJava {
-    options.compilerArgs += ['-proc:none']
-}
 
 jar {
     manifest {

proxy/src/main/java/com/velocitypowered/proxy/Velocity.java

@@ -1,29 +1,29 @@
 package com.velocitypowered.proxy;
 
+import java.text.DecimalFormat;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
-import java.text.DecimalFormat;
-
 public class Velocity {
-    private static final Logger logger = LogManager.getLogger(Velocity.class);
 
-    static {
+  private static final Logger logger = LogManager.getLogger(Velocity.class);
-        // We use BufferedImage for favicons, and on macOS this puts the Java application in the dock. How inconvenient.
-        // Force AWT to work with its head chopped off.
-        System.setProperty("java.awt.headless", "true");
-    }
 
-    public static void main(String... args) {
+  static {
-        long startTime = System.currentTimeMillis();
+    // We use BufferedImage for favicons, and on macOS this puts the Java application in the dock. How inconvenient.
+    // Force AWT to work with its head chopped off.
+    System.setProperty("java.awt.headless", "true");
+  }
 
-        VelocityServer server = new VelocityServer();
+  public static void main(String... args) {
-        server.start();
+    long startTime = System.currentTimeMillis();
 
-        Runtime.getRuntime().addShutdownHook(new Thread(server::shutdown, "Shutdown thread"));
+    VelocityServer server = new VelocityServer();
+    server.start();
 
-        double bootTime = (System.currentTimeMillis() - startTime) / 1000d;
+    Runtime.getRuntime().addShutdownHook(new Thread(server::shutdown, "Shutdown thread"));
-        logger.info("Done ({}s)!", new DecimalFormat("#.##").format(bootTime));
+
-        server.getConsoleCommandSource().start();
+    double bootTime = (System.currentTimeMillis() - startTime) / 1000d;
-    }
+    logger.info("Done ({}s)!", new DecimalFormat("#.##").format(bootTime));
+    server.getConsoleCommandSource().start();
+  }
 }

proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java

@@ -24,7 +24,6 @@ import com.velocitypowered.proxy.config.AnnotatedConfig;
 import com.velocitypowered.proxy.config.VelocityConfiguration;
 import com.velocitypowered.proxy.connection.client.ConnectedPlayer;
 import com.velocitypowered.proxy.console.VelocityConsole;
-import com.velocitypowered.proxy.util.VelocityChannelRegistrar;
 import com.velocitypowered.proxy.network.ConnectionManager;
 import com.velocitypowered.proxy.network.http.NettyHttpClient;
 import com.velocitypowered.proxy.plugin.VelocityEventManager;
@@ -36,356 +35,367 @@ import com.velocitypowered.proxy.server.ServerMap;
 import com.velocitypowered.proxy.util.AddressUtil;
 import com.velocitypowered.proxy.util.EncryptionUtils;
 import com.velocitypowered.proxy.util.Ratelimiter;
+import com.velocitypowered.proxy.util.VelocityChannelRegistrar;
 import io.netty.bootstrap.Bootstrap;
-import net.kyori.text.Component;
-import net.kyori.text.TextComponent;
-import net.kyori.text.serializer.GsonComponentSerializer;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.checkerframework.checker.nullness.qual.*;
-
 import java.net.InetSocketAddress;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.security.KeyPair;
-import java.util.*;
+import java.util.Collection;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicBoolean;
+import net.kyori.text.Component;
+import net.kyori.text.TextComponent;
+import net.kyori.text.serializer.GsonComponentSerializer;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
+import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
+import org.checkerframework.checker.nullness.qual.RequiresNonNull;
 
 public class VelocityServer implements ProxyServer {
 
-    private static final Logger logger = LogManager.getLogger(VelocityServer.class);
+  private static final Logger logger = LogManager.getLogger(VelocityServer.class);
-    public static final Gson GSON = new GsonBuilder()
+  public static final Gson GSON = new GsonBuilder()
-            .registerTypeHierarchyAdapter(Component.class, new GsonComponentSerializer())
+      .registerTypeHierarchyAdapter(Component.class, new GsonComponentSerializer())
-            .registerTypeHierarchyAdapter(Favicon.class, new FaviconSerializer())
+      .registerTypeHierarchyAdapter(Favicon.class, new FaviconSerializer())
-            .create();
+      .create();
 
-    private @MonotonicNonNull ConnectionManager cm;
+  private @MonotonicNonNull ConnectionManager cm;
-    private @MonotonicNonNull VelocityConfiguration configuration;
+  private @MonotonicNonNull VelocityConfiguration configuration;
-    private @MonotonicNonNull NettyHttpClient httpClient;
+  private @MonotonicNonNull NettyHttpClient httpClient;
-    private @MonotonicNonNull KeyPair serverKeyPair;
+  private @MonotonicNonNull KeyPair serverKeyPair;
-    private @MonotonicNonNull ServerMap servers;
+  private @MonotonicNonNull ServerMap servers;
-    private final VelocityCommandManager commandManager = new VelocityCommandManager();
+  private final VelocityCommandManager commandManager = new VelocityCommandManager();
-    private final AtomicBoolean shutdownInProgress = new AtomicBoolean(false);
+  private final AtomicBoolean shutdownInProgress = new AtomicBoolean(false);
-    private boolean shutdown = false;
+  private boolean shutdown = false;
-    private @MonotonicNonNull VelocityPluginManager pluginManager;
+  private @MonotonicNonNull VelocityPluginManager pluginManager;
 
-    private final Map<UUID, ConnectedPlayer> connectionsByUuid = new ConcurrentHashMap<>();
+  private final Map<UUID, ConnectedPlayer> connectionsByUuid = new ConcurrentHashMap<>();
-    private final Map<String, ConnectedPlayer> connectionsByName = new ConcurrentHashMap<>();
+  private final Map<String, ConnectedPlayer> connectionsByName = new ConcurrentHashMap<>();
-    private @MonotonicNonNull VelocityConsole console;
+  private @MonotonicNonNull VelocityConsole console;
-    private @MonotonicNonNull Ratelimiter ipAttemptLimiter;
+  private @MonotonicNonNull Ratelimiter ipAttemptLimiter;
-    private @MonotonicNonNull VelocityEventManager eventManager;
+  private @MonotonicNonNull VelocityEventManager eventManager;
-    private @MonotonicNonNull VelocityScheduler scheduler;
+  private @MonotonicNonNull VelocityScheduler scheduler;
-    private final VelocityChannelRegistrar channelRegistrar = new VelocityChannelRegistrar();
+  private final VelocityChannelRegistrar channelRegistrar = new VelocityChannelRegistrar();
 
-    public KeyPair getServerKeyPair() {
+  public KeyPair getServerKeyPair() {
-        if (serverKeyPair == null) {
+    if (serverKeyPair == null) {
-            throw new AssertionError();
+      throw new AssertionError();
-        }
+    }
-        return serverKeyPair;
+    return serverKeyPair;
+  }
+
+  public VelocityConfiguration getConfiguration() {
+    VelocityConfiguration cfg = this.configuration;
+    if (cfg == null) {
+      throw new IllegalStateException("Configuration not initialized!");
+    }
+    return cfg;
+  }
+
+  @Override
+  public ProxyVersion getVersion() {
+    Package pkg = VelocityServer.class.getPackage();
+    String implName;
+    String implVersion;
+    String implVendor;
+    if (pkg != null) {
+      implName = MoreObjects.firstNonNull(pkg.getImplementationTitle(), "Velocity");
+      implVersion = MoreObjects.firstNonNull(pkg.getImplementationVersion(), "<unknown>");
+      implVendor = MoreObjects.firstNonNull(pkg.getImplementationVendor(), "Velocity Contributors");
+    } else {
+      implName = "Velocity";
+      implVersion = "<unknown>";
+      implVendor = "Velocity Contributors";
     }
 
-    public VelocityConfiguration getConfiguration() {
+    return new ProxyVersion(implName, implVendor, implVersion);
-        VelocityConfiguration cfg = this.configuration;
+  }
-        if (cfg == null) {
+
-            throw new IllegalStateException("Configuration not initialized!");
+  @Override
-        }
+  public VelocityCommandManager getCommandManager() {
-        return cfg;
+    return commandManager;
+  }
+
+  @EnsuresNonNull({"serverKeyPair", "servers", "pluginManager", "eventManager", "scheduler",
+      "console", "cm", "configuration"})
+  public void start() {
+    logger.info("Booting up {} {}...", getVersion().getName(), getVersion().getVersion());
+
+    serverKeyPair = EncryptionUtils.createRsaKeyPair(1024);
+    pluginManager = new VelocityPluginManager(this);
+    eventManager = new VelocityEventManager(pluginManager);
+    scheduler = new VelocityScheduler(pluginManager);
+    console = new VelocityConsole(this);
+    cm = new ConnectionManager(this);
+    servers = new ServerMap(this);
+
+    cm.logChannelInformation();
+
+    // Initialize commands first
+    commandManager.register(new VelocityCommand(this), "velocity");
+    commandManager.register(new ServerCommand(this), "server");
+    commandManager.register(new ShutdownCommand(this), "shutdown", "end");
+
+    try {
+      Path configPath = Paths.get("velocity.toml");
+      configuration = VelocityConfiguration.read(configPath);
+
+      if (!configuration.validate()) {
+        logger.error(
+            "Your configuration is invalid. Velocity will refuse to start up until the errors are resolved.");
+        LogManager.shutdown();
+        System.exit(1);
+      }
+
+      AnnotatedConfig
+          .saveConfig(configuration.dumpConfig(), configPath); //Resave config to add new values
+
+    } catch (Exception e) {
+      logger.error("Unable to read/load/save your velocity.toml. The server will shut down.", e);
+      LogManager.shutdown();
+      System.exit(1);
     }
 
-    @Override
+    for (Map.Entry<String, String> entry : configuration.getServers().entrySet()) {
-    public ProxyVersion getVersion() {
+      servers.register(new ServerInfo(entry.getKey(), AddressUtil.parseAddress(entry.getValue())));
-        Package pkg = VelocityServer.class.getPackage();
+    }
-        String implName;
+
-        String implVersion;
+    ipAttemptLimiter = new Ratelimiter(configuration.getLoginRatelimit());
-        String implVendor;
+    httpClient = new NettyHttpClient(this);
-        if (pkg != null) {
+    loadPlugins();
-            implName = MoreObjects.firstNonNull(pkg.getImplementationTitle(), "Velocity");
+
-            implVersion = MoreObjects.firstNonNull(pkg.getImplementationVersion(), "<unknown>");
+    // Go ahead and fire the proxy initialization event. We block since plugins should have a chance
-            implVendor = MoreObjects.firstNonNull(pkg.getImplementationVendor(), "Velocity Contributors");
+    // to fully initialize before we accept any connections to the server.
-        } else {
+    eventManager.fire(new ProxyInitializeEvent()).join();
-            implName = "Velocity";
+
-            implVersion = "<unknown>";
+    // init console permissions after plugins are loaded
-            implVendor = "Velocity Contributors";
+    console.setupPermissions();
+
+    this.cm.bind(configuration.getBind());
+
+    if (configuration.isQueryEnabled()) {
+      this.cm.queryBind(configuration.getBind().getHostString(), configuration.getQueryPort());
+    }
+  }
+
+  @RequiresNonNull({"pluginManager", "eventManager"})
+  private void loadPlugins() {
+    logger.info("Loading plugins...");
+
+    try {
+      Path pluginPath = Paths.get("plugins");
+
+      if (!pluginPath.toFile().exists()) {
+        Files.createDirectory(pluginPath);
+      } else {
+        if (!pluginPath.toFile().isDirectory()) {
+          logger.warn("Plugin location {} is not a directory, continuing without loading plugins",
+              pluginPath);
+          return;
         }
 
-        return new ProxyVersion(implName, implVendor, implVersion);
+        pluginManager.loadPlugins(pluginPath);
+      }
+    } catch (Exception e) {
+      logger.error("Couldn't load plugins", e);
     }
 
-    @Override
+    // Register the plugin main classes so that we may proceed with firing the proxy initialize event
-    public VelocityCommandManager getCommandManager() {
+    for (PluginContainer plugin : pluginManager.getPlugins()) {
-        return commandManager;
+      Optional<?> instance = plugin.getInstance();
+      if (instance.isPresent()) {
+        eventManager.register(instance.get(), instance.get());
+      }
     }
 
-    @EnsuresNonNull({"serverKeyPair", "servers", "pluginManager", "eventManager", "scheduler", "console", "cm", "configuration"})
+    logger.info("Loaded {} plugins", pluginManager.getPlugins().size());
-    public void start() {
+  }
-        logger.info("Booting up {} {}...", getVersion().getName(), getVersion().getVersion());
 
-        serverKeyPair = EncryptionUtils.createRsaKeyPair(1024);
+  public Bootstrap initializeGenericBootstrap() {
-        pluginManager = new VelocityPluginManager(this);
+    if (cm == null) {
-        eventManager = new VelocityEventManager(pluginManager);
+      throw new IllegalStateException("Server did not initialize properly.");
-        scheduler = new VelocityScheduler(pluginManager);
+    }
-        console = new VelocityConsole(this);
+    return this.cm.createWorker();
-        cm = new ConnectionManager(this);
+  }
-        servers = new ServerMap(this);
 
-        cm.logChannelInformation();
+  public boolean isShutdown() {
+    return shutdown;
+  }
 
-        // Initialize commands first
+  public void shutdown() {
-        commandManager.register(new VelocityCommand(this), "velocity");
+    if (eventManager == null || pluginManager == null || cm == null || scheduler == null) {
-        commandManager.register(new ServerCommand(this), "server");
+      throw new AssertionError();
-        commandManager.register(new ShutdownCommand(this), "shutdown", "end");
-
-        try {
-            Path configPath = Paths.get("velocity.toml");
-            configuration = VelocityConfiguration.read(configPath);
-
-            if (!configuration.validate()) {
-                logger.error("Your configuration is invalid. Velocity will refuse to start up until the errors are resolved.");
-                LogManager.shutdown();
-                System.exit(1);
-            }
-
-            AnnotatedConfig.saveConfig(configuration.dumpConfig(), configPath); //Resave config to add new values
-
-        } catch (Exception e) {
-            logger.error("Unable to read/load/save your velocity.toml. The server will shut down.", e);
-            LogManager.shutdown();
-            System.exit(1);
-        }
-
-        for (Map.Entry<String, String> entry : configuration.getServers().entrySet()) {
-            servers.register(new ServerInfo(entry.getKey(), AddressUtil.parseAddress(entry.getValue())));
-        }
-
-        ipAttemptLimiter = new Ratelimiter(configuration.getLoginRatelimit());
-        httpClient = new NettyHttpClient(this);
-        loadPlugins();
-
-        // Go ahead and fire the proxy initialization event. We block since plugins should have a chance
-        // to fully initialize before we accept any connections to the server.
-        eventManager.fire(new ProxyInitializeEvent()).join();
-
-        // init console permissions after plugins are loaded
-        console.setupPermissions();
-
-        this.cm.bind(configuration.getBind());
-
-        if (configuration.isQueryEnabled()) {
-            this.cm.queryBind(configuration.getBind().getHostString(), configuration.getQueryPort());
-        }
     }
 
-    @RequiresNonNull({"pluginManager", "eventManager"})
+    if (!shutdownInProgress.compareAndSet(false, true)) {
-    private void loadPlugins() {
+      return;
-        logger.info("Loading plugins...");
+    }
+    logger.info("Shutting down the proxy...");
 
-        try {
+    for (ConnectedPlayer player : ImmutableList.copyOf(connectionsByUuid.values())) {
-            Path pluginPath = Paths.get("plugins");
+      player.close(TextComponent.of("Proxy shutting down."));
-
-            if (!pluginPath.toFile().exists()) {
-                Files.createDirectory(pluginPath);
-            } else {
-                if (!pluginPath.toFile().isDirectory()) {
-                    logger.warn("Plugin location {} is not a directory, continuing without loading plugins", pluginPath);
-                    return;
-                }
-
-                pluginManager.loadPlugins(pluginPath);
-            }
-        } catch (Exception e) {
-            logger.error("Couldn't load plugins", e);
-        }
-
-        // Register the plugin main classes so that we may proceed with firing the proxy initialize event
-        for (PluginContainer plugin : pluginManager.getPlugins()) {
-            Optional<?> instance = plugin.getInstance();
-            if (instance.isPresent()) {
-                eventManager.register(instance.get(), instance.get());
-            }
-        }
-
-        logger.info("Loaded {} plugins", pluginManager.getPlugins().size());
     }
 
-    public Bootstrap initializeGenericBootstrap() {
+    this.cm.shutdown();
-        if (cm == null) {
+
-            throw new IllegalStateException("Server did not initialize properly.");
+    eventManager.fire(new ProxyShutdownEvent());
-        }
+    try {
-        return this.cm.createWorker();
+      if (!eventManager.shutdown() || !scheduler.shutdown()) {
+        logger.error("Your plugins took over 10 seconds to shut down.");
+      }
+    } catch (InterruptedException e) {
+      // Not much we can do about this...
+      Thread.currentThread().interrupt();
     }
 
-    public boolean isShutdown() {
+    shutdown = true;
-        return shutdown;
+  }
+
+  public NettyHttpClient getHttpClient() {
+    if (httpClient == null) {
+      throw new IllegalStateException("HTTP client not initialized");
     }
+    return httpClient;
+  }
 
-    public void shutdown() {
+  public Ratelimiter getIpAttemptLimiter() {
-        if (eventManager == null || pluginManager == null || cm == null || scheduler == null) {
+    if (ipAttemptLimiter == null) {
-            throw new AssertionError();
+      throw new IllegalStateException("Ratelimiter not initialized");
-        }
-
-        if (!shutdownInProgress.compareAndSet(false, true)) {
-            return;
-        }
-        logger.info("Shutting down the proxy...");
-
-        for (ConnectedPlayer player : ImmutableList.copyOf(connectionsByUuid.values())) {
-            player.close(TextComponent.of("Proxy shutting down."));
-        }
-
-        this.cm.shutdown();
-
-        eventManager.fire(new ProxyShutdownEvent());
-        try {
-            if (!eventManager.shutdown() || !scheduler.shutdown()) {
-                logger.error("Your plugins took over 10 seconds to shut down.");
-            }
-        } catch (InterruptedException e) {
-            // Not much we can do about this...
-            Thread.currentThread().interrupt();
-        }
-
-        shutdown = true;
     }
+    return ipAttemptLimiter;
+  }
 
-    public NettyHttpClient getHttpClient() {
+  public boolean registerConnection(ConnectedPlayer connection) {
-        if (httpClient == null) {
+    String lowerName = connection.getUsername().toLowerCase(Locale.US);
-            throw new IllegalStateException("HTTP client not initialized");
+    if (connectionsByName.putIfAbsent(lowerName, connection) != null) {
-        }
+      return false;
-        return httpClient;
     }
+    if (connectionsByUuid.putIfAbsent(connection.getUniqueId(), connection) != null) {
+      connectionsByName.remove(lowerName, connection);
+      return false;
+    }
+    return true;
+  }
 
-    public Ratelimiter getIpAttemptLimiter() {
+  public void unregisterConnection(ConnectedPlayer connection) {
-        if (ipAttemptLimiter == null) {
+    connectionsByName.remove(connection.getUsername().toLowerCase(Locale.US), connection);
-            throw new IllegalStateException("Ratelimiter not initialized");
+    connectionsByUuid.remove(connection.getUniqueId(), connection);
-        }
+  }
-        return ipAttemptLimiter;
-    }
 
-    public boolean registerConnection(ConnectedPlayer connection) {
+  @Override
-        String lowerName = connection.getUsername().toLowerCase(Locale.US);
+  public Optional<Player> getPlayer(String username) {
-        if (connectionsByName.putIfAbsent(lowerName, connection) != null) {
+    Preconditions.checkNotNull(username, "username");
-            return false;
+    return Optional.ofNullable(connectionsByName.get(username.toLowerCase(Locale.US)));
-        }
+  }
-        if (connectionsByUuid.putIfAbsent(connection.getUniqueId(), connection) != null) {
-            connectionsByName.remove(lowerName, connection);
-            return false;
-        }
-        return true;
-    }
 
-    public void unregisterConnection(ConnectedPlayer connection) {
+  @Override
-        connectionsByName.remove(connection.getUsername().toLowerCase(Locale.US), connection);
+  public Optional<Player> getPlayer(UUID uuid) {
-        connectionsByUuid.remove(connection.getUniqueId(), connection);
+    Preconditions.checkNotNull(uuid, "uuid");
-    }
+    return Optional.ofNullable(connectionsByUuid.get(uuid));
+  }
 
-    @Override
+  @Override
-    public Optional<Player> getPlayer(String username) {
+  public void broadcast(Component component) {
-        Preconditions.checkNotNull(username, "username");
+    Preconditions.checkNotNull(component, "component");
-        return Optional.ofNullable(connectionsByName.get(username.toLowerCase(Locale.US)));
+    Chat chat = Chat.createClientbound(component);
+    for (ConnectedPlayer player : connectionsByUuid.values()) {
+      player.getConnection().write(chat);
     }
+  }
 
-    @Override
+  @Override
-    public Optional<Player> getPlayer(UUID uuid) {
+  public Collection<Player> getAllPlayers() {
-        Preconditions.checkNotNull(uuid, "uuid");
+    return ImmutableList.copyOf(connectionsByUuid.values());
-        return Optional.ofNullable(connectionsByUuid.get(uuid));
+  }
-    }
 
-    @Override
+  @Override
-    public void broadcast(Component component) {
+  public int getPlayerCount() {
-        Preconditions.checkNotNull(component, "component");
+    return connectionsByUuid.size();
-        Chat chat = Chat.createClientbound(component);
+  }
-        for (ConnectedPlayer player : connectionsByUuid.values()) {
-            player.getConnection().write(chat);
-        }
-    }
 
-    @Override
+  @Override
-    public Collection<Player> getAllPlayers() {
+  public Optional<RegisteredServer> getServer(String name) {
-        return ImmutableList.copyOf(connectionsByUuid.values());
+    Preconditions.checkNotNull(name, "name");
+    if (servers == null) {
+      throw new IllegalStateException("Server did not initialize properly.");
     }
+    return servers.getServer(name);
+  }
 
-    @Override
+  @Override
-    public int getPlayerCount() {
+  public Collection<RegisteredServer> getAllServers() {
-        return connectionsByUuid.size();
+    if (servers == null) {
+      throw new IllegalStateException("Server did not initialize properly.");
     }
+    return servers.getAllServers();
+  }
 
-    @Override
+  @Override
-    public Optional<RegisteredServer> getServer(String name) {
+  public RegisteredServer registerServer(ServerInfo server) {
-        Preconditions.checkNotNull(name, "name");
+    if (servers == null) {
-        if (servers == null) {
+      throw new IllegalStateException("Server did not initialize properly.");
-            throw new IllegalStateException("Server did not initialize properly.");
-        }
-        return servers.getServer(name);
     }
+    return servers.register(server);
+  }
 
-    @Override
+  @Override
-    public Collection<RegisteredServer> getAllServers() {
+  public void unregisterServer(ServerInfo server) {
-        if (servers == null) {
+    if (servers == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException("Server did not initialize properly.");
-        }
-        return servers.getAllServers();
     }
+    servers.unregister(server);
+  }
 
-    @Override
+  @Override
-    public RegisteredServer registerServer(ServerInfo server) {
+  public VelocityConsole getConsoleCommandSource() {
-        if (servers == null) {
+    if (console == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException("Server did not initialize properly.");
-        }
-        return servers.register(server);
     }
+    return console;
+  }
 
-    @Override
+  @Override
-    public void unregisterServer(ServerInfo server) {
+  public PluginManager getPluginManager() {
-        if (servers == null) {
+    if (pluginManager == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException("Server did not initialize properly.");
-        }
-        servers.unregister(server);
     }
+    return pluginManager;
+  }
 
-    @Override
+  @Override
-    public VelocityConsole getConsoleCommandSource() {
+  public EventManager getEventManager() {
-        if (console == null) {
+    if (eventManager == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException("Server did not initialize properly.");
-        }
-        return console;
     }
+    return eventManager;
+  }
 
-    @Override
+  @Override
-    public PluginManager getPluginManager() {
+  public VelocityScheduler getScheduler() {
-        if (pluginManager == null) {
+    if (scheduler == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException("Server did not initialize properly.");
-        }
-        return pluginManager;
     }
+    return scheduler;
+  }
 
-    @Override
+  @Override
-    public EventManager getEventManager() {
+  public VelocityChannelRegistrar getChannelRegistrar() {
-        if (eventManager == null) {
+    return channelRegistrar;
-            throw new IllegalStateException("Server did not initialize properly.");
+  }
-        }
-        return eventManager;
-    }
 
-    @Override
+  @Override
-    public VelocityScheduler getScheduler() {
+  public InetSocketAddress getBoundAddress() {
-        if (scheduler == null) {
+    if (configuration == null) {
-            throw new IllegalStateException("Server did not initialize properly.");
+      throw new IllegalStateException(
-        }
+          "No configuration"); // even though you'll never get the chance... heh, heh
-        return scheduler;
-    }
-
-    @Override
-    public VelocityChannelRegistrar getChannelRegistrar() {
-        return channelRegistrar;
-    }
-
-    @Override
-    public InetSocketAddress getBoundAddress() {
-        if (configuration == null) {
-            throw new IllegalStateException("No configuration"); // even though you'll never get the chance... heh, heh
-        }
-        return configuration.getBind();
     }
+    return configuration.getBind();
+  }
 }

proxy/src/main/java/com/velocitypowered/proxy/command/ServerCommand.java

@@ -9,90 +9,96 @@ import com.velocitypowered.api.proxy.ProxyServer;
 import com.velocitypowered.api.proxy.ServerConnection;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.proxy.server.ServerInfo;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
 import net.kyori.text.TextComponent;
 import net.kyori.text.event.ClickEvent;
 import net.kyori.text.event.HoverEvent;
 import net.kyori.text.format.TextColor;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
-import java.util.List;
-import java.util.Optional;
-import java.util.stream.Collectors;
-
 public class ServerCommand implements Command {
-    private final ProxyServer server;
 
-    public ServerCommand(ProxyServer server) {
+  private final ProxyServer server;
-        this.server = server;
+
+  public ServerCommand(ProxyServer server) {
+    this.server = server;
+  }
+
+  @Override
+  public void execute(CommandSource source, String @NonNull [] args) {
+    if (!(source instanceof Player)) {
+      source.sendMessage(TextComponent.of("Only players may run this command.", TextColor.RED));
+      return;
     }
 
-    @Override
+    Player player = (Player) source;
-    public void execute(CommandSource source, String @NonNull [] args) {
+    if (args.length == 1) {
-        if (!(source instanceof Player)) {
+      // Trying to connect to a server.
-            source.sendMessage(TextComponent.of("Only players may run this command.", TextColor.RED));
+      String serverName = args[0];
-            return;
+      Optional<RegisteredServer> toConnect = server.getServer(serverName);
-        }
+      if (!toConnect.isPresent()) {
+        player.sendMessage(
+            TextComponent.of("Server " + serverName + " doesn't exist.", TextColor.RED));
+        return;
+      }
 
-        Player player = (Player) source;
+      player.createConnectionRequest(toConnect.get()).fireAndForget();
-        if (args.length == 1) {
+    } else {
-            // Trying to connect to a server.
+      String currentServer = player.getCurrentServer().map(ServerConnection::getServerInfo)
-            String serverName = args[0];
+          .map(ServerInfo::getName)
-            Optional<RegisteredServer> toConnect = server.getServer(serverName);
+          .orElse("<unknown>");
-            if (!toConnect.isPresent()) {
+      player.sendMessage(TextComponent
-                player.sendMessage(TextComponent.of("Server " + serverName + " doesn't exist.", TextColor.RED));
+          .of("You are currently connected to " + currentServer + ".", TextColor.YELLOW));
-                return;
-            }
 
-            player.createConnectionRequest(toConnect.get()).fireAndForget();
+      // Assemble the list of servers as components
+      TextComponent.Builder serverListBuilder = TextComponent.builder("Available servers: ")
+          .color(TextColor.YELLOW);
+      List<RegisteredServer> infos = ImmutableList.copyOf(server.getAllServers());
+      for (int i = 0; i < infos.size(); i++) {
+        RegisteredServer rs = infos.get(i);
+        TextComponent infoComponent = TextComponent.of(rs.getServerInfo().getName());
+        String playersText = rs.getPlayersConnected().size() + " player(s) online";
+        if (rs.getServerInfo().getName().equals(currentServer)) {
+          infoComponent = infoComponent.color(TextColor.GREEN)
+              .hoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT,
+                  TextComponent.of("Currently connected to this server\n" + playersText)));
         } else {
-            String currentServer = player.getCurrentServer().map(ServerConnection::getServerInfo).map(ServerInfo::getName)
+          infoComponent = infoComponent.color(TextColor.GRAY)
-                    .orElse("<unknown>");
+              .clickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND,
-            player.sendMessage(TextComponent.of("You are currently connected to " + currentServer + ".", TextColor.YELLOW));
+                  "/server " + rs.getServerInfo().getName()))
-
+              .hoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT,
-            // Assemble the list of servers as components
+                  TextComponent.of("Click to connect to this server\n" + playersText)));
-            TextComponent.Builder serverListBuilder = TextComponent.builder("Available servers: ").color(TextColor.YELLOW);
-            List<RegisteredServer> infos = ImmutableList.copyOf(server.getAllServers());
-            for (int i = 0; i < infos.size(); i++) {
-                RegisteredServer rs = infos.get(i);
-                TextComponent infoComponent = TextComponent.of(rs.getServerInfo().getName());
-                String playersText = rs.getPlayersConnected().size() + " player(s) online";
-                if (rs.getServerInfo().getName().equals(currentServer)) {
-                    infoComponent = infoComponent.color(TextColor.GREEN)
-                            .hoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT,
-                                    TextComponent.of("Currently connected to this server\n" + playersText)));
-                } else {
-                    infoComponent = infoComponent.color(TextColor.GRAY)
-                            .clickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/server " + rs.getServerInfo().getName()))
-                            .hoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, TextComponent.of("Click to connect to this server\n" + playersText)));
-                }
-                serverListBuilder.append(infoComponent);
-                if (i != infos.size() - 1) {
-                    serverListBuilder.append(TextComponent.of(", ", TextColor.GRAY));
-                }
-            }
-
-            player.sendMessage(serverListBuilder.build());
         }
-    }
+        serverListBuilder.append(infoComponent);
-
+        if (i != infos.size() - 1) {
-    @Override
+          serverListBuilder.append(TextComponent.of(", ", TextColor.GRAY));
-    public List<String> suggest(CommandSource source, String @NonNull [] currentArgs) {
-        if (currentArgs.length == 0) {
-            return server.getAllServers().stream()
-                    .map(rs -> rs.getServerInfo().getName())
-                    .collect(Collectors.toList());
-        } else if (currentArgs.length == 1) {
-            return server.getAllServers().stream()
-                    .map(rs -> rs.getServerInfo().getName())
-                    .filter(name -> name.regionMatches(true, 0, currentArgs[0], 0, currentArgs[0].length()))
-                    .collect(Collectors.toList());
-        } else {
-            return ImmutableList.of();
         }
-    }
+      }
 
-    @Override
+      player.sendMessage(serverListBuilder.build());
-    public boolean hasPermission(CommandSource source, String @NonNull [] args) {
-        return source.getPermissionValue("velocity.command.server") != Tristate.FALSE;
     }
+  }
+
+  @Override
+  public List<String> suggest(CommandSource source, String @NonNull [] currentArgs) {
+    if (currentArgs.length == 0) {
+      return server.getAllServers().stream()
+          .map(rs -> rs.getServerInfo().getName())
+          .collect(Collectors.toList());
+    } else if (currentArgs.length == 1) {
+      return server.getAllServers().stream()
+          .map(rs -> rs.getServerInfo().getName())
+          .filter(name -> name.regionMatches(true, 0, currentArgs[0], 0, currentArgs[0].length()))
+          .collect(Collectors.toList());
+    } else {
+      return ImmutableList.of();
+    }
+  }
+
+  @Override
+  public boolean hasPermission(CommandSource source, String @NonNull [] args) {
+    return source.getPermissionValue("velocity.command.server") != Tristate.FALSE;
+  }
 }

proxy/src/main/java/com/velocitypowered/proxy/command/ShutdownCommand.java

@@ -8,23 +8,25 @@ import net.kyori.text.format.TextColor;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 public class ShutdownCommand implements Command {
-    private final VelocityServer server;
 
-    public ShutdownCommand(VelocityServer server) {
+  private final VelocityServer server;
-        this.server = server;
-    }
 
-    @Override
+  public ShutdownCommand(VelocityServer server) {
-    public void execute(CommandSource source, String @NonNull [] args) {
+    this.server = server;
-        if (source != server.getConsoleCommandSource()) {
+  }
-            source.sendMessage(TextComponent.of("You are not allowed to use this command.", TextColor.RED));
-            return;
-        }
-        server.shutdown();
-    }
 
-    @Override
+  @Override
-    public boolean hasPermission(CommandSource source, String @NonNull [] args) {
+  public void execute(CommandSource source, String @NonNull [] args) {
-        return source == server.getConsoleCommandSource();
+    if (source != server.getConsoleCommandSource()) {
+      source
+          .sendMessage(TextComponent.of("You are not allowed to use this command.", TextColor.RED));
+      return;
     }
+    server.shutdown();
+  }
+
+  @Override
+  public boolean hasPermission(CommandSource source, String @NonNull [] args) {
+    return source == server.getConsoleCommandSource();
+  }
 }