private void Update()
 {
     try
     {
         var responseObj = _sensorsClient.GetUpdates();
         _connectionsStatus = ConnectionsStatus.Ok;
         _lastUpdate        = DateTime.Now;
         Update(responseObj);
     }
     catch (Exception e)
     {
         Logger.Error($"ClientMonitoringModel: Update error: {e}");
         _connectionsStatus = ConnectionsStatus.Error;
         foreach (var node in Nodes)
         {
             node.Status = TextConstants.UpdateError;
         }
     }
     OnConnectionStatusChangedEvent();
 }