/// <summary>
 /// Timer callback to renew the lease time.
 /// </summary>
 /// <param name="obj"></param>
 private void OnRenewLeaseCallback(object obj)
 {
     try
     {
         _timerRenewLease.Change(RENEW_LEASE_TIME, Timeout.Infinite);
         _mcServiceProxy.RenewLease();
     }
     catch (Exception exc)
     {
         _log.Fatal(m => m("Renew lease for M&C failed. Exception message: " + exc.Message));
     }
 }