public Task <NotificationResult> ShowAsync()
{
Point position = new Point();
if (window != null)
{
var pointToScreen = window.PointToScreen(new Point());
if (pointToScreen != null)
{
position = new Point(pointToScreen.X + window.Width / 2, pointToScreen.Y + window.Height / 2);
}
}
notifier.ChangeScreen(position);
return(notifier.ShowAsync(notification, duration));
}