Fix checkstyle violations

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

@@ -285,9 +285,6 @@ final class SuggestionsProvider<S> {
    * Parses the hint nodes under the given node, which is either an alias node of
    * a {@link Command} or another hint node.
    *
-   * The caller must check the requirements
-   * are satisfied by a given source prior to calling this method.
-   *
    * <p>The reader and context are not mutated by this method.
    *
    * @param node the node to parse

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

@@ -220,7 +220,8 @@ public class VelocityCommandManager implements CommandManager {
     final String normalizedInput = VelocityCommands.normalizeInput(cmdLine, false);
     try {
       return suggestionsProvider.provideSuggestions(normalizedInput, source)
-              .thenApply(suggestions -> Lists.transform(suggestions.getList(), Suggestion::getText));
+              .thenApply(suggestions ->
+                      Lists.transform(suggestions.getList(), Suggestion::getText));
     } catch (final Throwable e) {
       // Again, plugins are naughty
       return CompletableFutures.exceptionallyCompletedFuture(

proxy/src/main/java/com/velocitypowered/proxy/command/brigadier/VelocityArgumentBuilder.java

@@ -33,6 +33,16 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 public final class VelocityArgumentBuilder<S, T>
         extends ArgumentBuilder<S, VelocityArgumentBuilder<S, T>> {
 
+  /**
+   * Creates a builder for creating {@link VelocityArgumentCommandNode}s with
+   * the given name and type.
+   *
+   * @param name the name of the node
+   * @param type the type of the argument to parse
+   * @param <S> the type of the command source
+   * @param <T> the type of the argument to parse
+   * @return a builder
+   */
   public static <S, T> VelocityArgumentBuilder<S, T> velocityArgument(final String name,
                                                                     final ArgumentType<T> type) {
     Preconditions.checkNotNull(name, "name");
@@ -44,7 +54,7 @@ public final class VelocityArgumentBuilder<S, T>
   private final ArgumentType<T> type;
   private SuggestionProvider<S> suggestionsProvider = null;
 
-  public VelocityArgumentBuilder(final String name, final ArgumentType<T> type) {
+  private VelocityArgumentBuilder(final String name, final ArgumentType<T> type) {
     this.name = name;
     this.type = type;
   }

proxy/src/main/java/com/velocitypowered/proxy/command/brigadier/VelocityArgumentCommandNode.java

@@ -51,7 +51,7 @@ public class VelocityArgumentCommandNode<S, T> extends ArgumentCommandNode<S, St
 
   private final ArgumentType<T> type;
 
-  public VelocityArgumentCommandNode(
+  VelocityArgumentCommandNode(
           final String name, final ArgumentType<T> type, final Command<S> command,
           final Predicate<S> requirement,
           final BiPredicate<CommandContextBuilder<S>, ImmutableStringReader> contextRequirement,

proxy/src/test/java/com/velocitypowered/proxy/command/CommandManagerTests.java

@@ -85,7 +85,7 @@ public class CommandManagerTests extends CommandTestSuite {
     final var oldMeta = manager.metaBuilder("foo").build();
     manager.register(oldMeta, DummyCommand.INSTANCE); // fails on execution
     final var newMeta = manager.metaBuilder("foo").build();
-    manager.register("foo", (RawCommand) invocation -> called.set(true));
+    manager.register(newMeta, (RawCommand) invocation -> called.set(true));
     manager.executeAsync(MockCommandSource.INSTANCE, "foo").join();
 
     assertTrue(called.get());

proxy/src/test/java/com/velocitypowered/proxy/command/brigadier/VelocityArgumentCommandNodeTests.java

@@ -18,7 +18,11 @@
 package com.velocitypowered.proxy.command.brigadier;
 
 import static com.velocitypowered.proxy.command.brigadier.VelocityArgumentBuilder.velocityArgument;
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.StringReader;