class ZookeeperClient implements Watcher {

    public void close() {
        if (PINGER_ENABLED) {
            ZkPinger pinger0 = pinger;

            if (pinger0 != null)
                pinger0.stop();
        }

        closeClient();
    }

      ZookeeperClient(IgniteLogger log, String connectString, int sesTimeout, IgniteRunnable connLostC);
      ZookeeperClient(String igniteInstanceName,
        IgniteLogger log,
        String connectString,
        int sesTimeout,
        IgniteRunnable connLostC);

}