code: private EventCallBackStruct getEventCallBackStruct(String eventName) {
          Enumeration keys = event_callback_map.keys();
          while (keys.hasMoreElements()) {
              String key = (String) keys.nextElement();
              //  Notifd do not use tango host
              int start = key.indexOf('/', "tango:// ".length());
              String shortName = key.substring(start+1);
              if (eventName.equalsIgnoreCase(shortName)) {
                  return event_callback_map.get(key);
              }
          }
          return null;
      }
docs: ===============================================================