protected override void OnClose(Control smartPart)
        {
            Utilities.Output("OnClose", "Before", smartPart);

            composedWorkspace.OnClose(smartPart);

            Utilities.Output("OnClose", "After", smartPart);
        }
 /// <summary>
 /// Calls <see cref="IComposableWorkspace{TSmartPart, TSmartPartInfo}.OnClose"/>
 /// on the composed workspace.
 /// </summary>
 protected override void OnClose(TSmartPart smartPart)
 {
     composedWorkspace.OnClose(smartPart);
 }