class ListenerType {
  static final simpleMsgListener = 'simpleMsgListener';
  static final connectListener = 'connectListener';
  static final userListener = 'userListener';
  static final groupListener = 'groupListener';
  static final advancedMsgListener = 'advancedMsgListener';
  static final conversationListener = 'conversationListener';
  static final friendListener = 'friendListener';
  static final signalingListener = 'signalingListener';
  static final msgSendProgressListener = "msgSendProgressListener";
}
