private static void OverrideDisconnected(GLib.GType gtype)
 {
     if (DisconnectedVMCallback == null)
     {
         DisconnectedVMCallback = new DisconnectedVMDelegate(disconnected_cb);
     }
     gnomesharp_client_override_disconnect(gtype.Val, DisconnectedVMCallback);
 }
 static extern void gnomesharp_client_override_disconnect(IntPtr gtype, DisconnectedVMDelegate cb);