private void HandleAction(Foundation.NSObservedChange obj)
        {
            var effectiveY = Math.Max(Control.ContentOffset.Y, 0);

            if (!CloseTo(effectiveY, _prevYOffset) && Element is NativeListView)
            {
                var myList = Element as NativeListView;

                myList.IsScrolling = true;
                _prevYOffset       = effectiveY;
            }
        }
 void HandleAction(Foundation.NSObservedChange obj)
 {
 }