Simplify SWCommand.register

SpigotCore_Main/src/de/steamwar/command/SWCommand.java

@@ -31,6 +31,7 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
 import java.util.function.BiConsumer;
+import java.util.function.Predicate;
 
 public class SWCommand<T extends CommandSender> {
 
@@ -113,12 +114,14 @@ public class SWCommand<T extends CommandSender> {
         return strings;
     }
 
-    public static <T extends CommandSender> void register(List<SWCommand<T>> commandList, String name, String... aliases) {
-        commandMap.register("steamwar", new Command(name, "", "/" + name, Arrays.asList(aliases)) {
+    public static <T extends CommandSender> void register(List<SWCommand<T>> commandList, String plugin, String name, Predicate<T> permissionPredicate, String... aliases) {
+        commandMap.register(plugin, new Command(name, "", "/" + name, Arrays.asList(aliases)) {
             @Override
             public boolean execute(CommandSender sender, String alias, String[] args) {
                 if (!isInstance(sender)) return false;
-                SWCommand.execute(commandList, (T) sender, args);
+                T t = (T) sender;
+                if (!permissionPredicate.test(t)) return false;
+                SWCommand.execute(commandList, t, args);
                 return true;
             }