public void RefreshNode()
        {
            var node = FocusedNode;

            try
            {
                _refreshing = true;
                LoadingMode = UnboundLoadModes.BeginUnboundLoad;
                _dataSourceModel.RefreshNode(node);
                FinishUnboundLoad();
            }
            catch (Exception e)
            {
                _dataSourceModel.CreateEmptyNode(node);
                DisplayErrorMessage(e.Message, "Error Refreshing Objects");
            }
        }