public XmlNode ExploreTests(string filter)
        {
            CallbackHandler handler = new CallbackHandler();

            CreateObject(EXPLORE_ACTION, testController, filter, handler);

            return MakeXmlNode(handler.Result);
        }
        public XmlNode Load()
        {
            CallbackHandler handler = new CallbackHandler();

            CreateObject(LOAD_ACTION, testController, handler);

            return MakeXmlNode(handler.Result);
        }