code: public void changeRoomName(String roomName)
              throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          MUCLightSetConfigsIQ mucLightSetConfigIQ = new MUCLightSetConfigsIQ(room, roomName, null);
          connection.createStanzaCollectorAndSend(mucLightSetConfigIQ).nextResultOrThrow();
      }
docs: Change the name of the room.
  
  @param roomName
  @throws NoResponseException
  @throws XMPPErrorException
  @throws NotConnectedException
  @throws InterruptedException