public static void Initialize(this UIElement element)
{
var userControl = new UserControl { Content = element };
userControl.BeginInit(); // hacking different things here
userControl.Measure(new Size(100, 100));
userControl.Arrange(new Rect(new Size(100, 100)));
element.RaiseEvent(new RoutedEventArgs(FrameworkElement.LoadedEvent));
}