docs: public synchronized MucCreateConfigFormHandle createOrJoin(Resourcepart nickname) throws NoResponseException, XMPPErrorException,
                      InterruptedException, MucAlreadyJoinedException, NotConnectedException, NotAMucServiceException {
          MucEnterConfiguration mucEnterConfiguration = getEnterConfigurationBuilder(nickname).build();
          return createOrJoin(mucEnterConfiguration);
      }