private void HandleTouchUpInside(object sender, EventArgs e)
        {
            Console.WriteLine ("HandleTouchUpInside");

            /*
            // Dont leak
            UIView v1 = new UIView ();
            UIView v2 = new UIView ();
            */

            /*
            // Dont leak
            UIView v1 = new DebugView ();
            UIView v2 = new UIView ();
            */

            /*
            // Leak
            UIView v1 = new UIView ();
            UIView v2 = new DebugView ();
            */

            // Leak
            UIView v1 = new DebugView ();
            UIView v2 = new DebugView ();

            v1.AddSubview (v2);
            View.AddSubview (v1);

            var sv = v2.Superview;			// cause of leak
            //v2.ResetSuperViewChache ();	// uncomment to fix

            v1.RemoveFromSuperview ();
        }