public static function AddVoidPersistentListener(unityEvent:
UnityEventBase,
call: UnityAction):
        void;
      
                  public static void AddVoidPersistentListener(UnityEventBase unityEvent,
UnityAction call);
    
                  public static
      def AddVoidPersistentListener(unityEvent as UnityEventBase,
 call as UnityAction)
      
        as void