Fix SWCommandUtils.generateCommandPart

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

@@ -191,7 +191,7 @@ public class SWCommandUtils {
 
         SWCommand.Guard guard = parameter.getAnnotation(SWCommand.Guard.class);
         if (guard != null) {
-            if (guard.value() != null) {
+            if (guard.value() != null && !guard.value().isEmpty()) {
                 return getGuardChecker(guard.value(), localGuardChecker);
             }
             return getGuardChecker(clazz.getTypeName(), localGuardChecker);
@@ -200,6 +200,9 @@ public class SWCommandUtils {
     }
 
     private static GuardChecker getGuardChecker(String s, Map<String, GuardChecker> localGuardChecker) {
+        System.out.println(": " + s);
+        System.out.println(localGuardChecker);
+        System.out.println(GUARD_FUNCTIONS);
         GuardChecker guardChecker = localGuardChecker.getOrDefault(s, GUARD_FUNCTIONS.getOrDefault(s, null));
         if (guardChecker == null) {
             throw new IllegalArgumentException("No guard found for " + s);