Fix CommandPart Validator for varargs part

src/de/steamwar/command/AbstractSWCommand.java

@@ -72,7 +72,10 @@ public abstract class AbstractSWCommand<T> {
         List<Runnable> errors = new ArrayList<>();
         try {
             if (!commandList.stream().anyMatch(s -> s.invoke(errors::add, sender, alias, args))) {
+                if (!errors.isEmpty()) {
                     errors.forEach(Runnable::run);
+                    return;
+                }
                 commandHelpList.stream().anyMatch(s -> s.invoke((ignore) -> {}, sender, alias, args));
             }
         } catch (CommandNoHelpException e) {

src/de/steamwar/command/AbstractTypeMapper.java

@@ -20,7 +20,6 @@
 package de.steamwar.command;
 
 import java.util.Collection;
-import java.util.function.BiConsumer;
 
 public interface AbstractTypeMapper<K, T> extends AbstractValidator<K, T> {
     /**
@@ -29,7 +28,7 @@ public interface AbstractTypeMapper<K, T> extends AbstractValidator<K, T> {
     T map(K sender, String[] previousArguments, String s);
 
     @Override
-    default boolean validate(K sender, T value, BiConsumer<String, Object[]> messageSender) {
+    default boolean validate(K sender, T value, MessageSender messageSender) {
         return true;
     }
 

src/de/steamwar/command/AbstractValidator.java

@@ -19,8 +19,6 @@
 
 package de.steamwar.command;
 
-import java.util.function.BiConsumer;
-
 @FunctionalInterface
 public interface AbstractValidator<K, T> {
 
@@ -32,5 +30,10 @@ public interface AbstractValidator<K, T> {
      * @param messageSender The message sender to send messages to the player. Never send messages directly to the player.
      * @return The result of the validation.
      */
-    boolean validate(K sender, T value, BiConsumer<String, Object[]> messageSender);
+    boolean validate(K sender, T value, MessageSender messageSender);
+
+    @FunctionalInterface
+    interface MessageSender {
+        void send(String s, Object... args);
+    }
 }