private JitsiMeetConference getConferenceForMucJid(String mucJid) {
   String roomName = MucUtil.extractRoomNameFromMucJid(mucJid);
   if (roomName == null) {
     return null;
   }
   return focusManager.getConference(roomName);
 }
  /** Initializes this instance and bind packet listeners. */
  public void init() {
    this.smackXmpp = focusManager.getOperationSet(OperationSetDirectSmackXmpp.class);

    smackXmpp.addPacketHandler(this, this);
  }