Add SWCommand.ClassMapper

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

@@ -89,6 +89,15 @@ public abstract class SWCommand {
                     throw new SecurityException(e.getMessage(), e);
                 }
             });
+            add(ClassMapper.class, method, i -> i != 0, false, TypeMapper.class, (anno, parameters) -> {
+                try {
+                    method.setAccessible(true);
+                    Object object = method.invoke(this);
+                    SWCommandUtils.addMapper(anno.value().getTypeName(), (TypeMapper<?>) object);
+                } catch (Exception e) {
+                    throw new SecurityException(e.getMessage(), e);
+                }
+            });
             add(RegisterHelp.class, method, i -> i != 1, true, null, (anno, parameters) -> {
                 if (!parameters[parameters.length - 1].isVarArgs()) {
                     return;
@@ -167,4 +176,11 @@ public abstract class SWCommand {
         String value();
     }
 
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.METHOD})
+    protected @interface ClassMapper {
+        Class<?> value();
+    }
+
 }