Stetic.WidgetEditSession.DestroyWrapperWidgetPlug C# (CSharp) Method

        public void DestroyWrapperWidgetPlug()
        {
            if (designer != null) {
                Gtk.Plug plug = (Gtk.Plug) WrapperWidget.Parent;
                plug.Remove (WrapperWidget);
                plug.Destroy ();
            }
        }

 protected override void OnDestroyPlug(uint socketId)
 {
     session.DestroyWrapperWidgetPlug();
 }