private void RightTapped(object sender, RightTappedRoutedEventArgs e)
        {
            var element = AssociatedObject as FrameworkElement;

            if (element != null)
            {
                FlyoutExtensions.ShowAttachedMenuFlyout(element, e);
            }
        }
        private void Holding(object sender, HoldingRoutedEventArgs e)
        {
            var element = AssociatedObject as FrameworkElement;

            if (element != null)
            {
                element.RightTapped -= RightTapped;
                FlyoutExtensions.ShowAttachedMenuFlyout(element, e);
            }
        }