private void WindowTitleThumbChangeWindowStateOnMouseDoubleClick(object sender, MouseButtonEventArgs mouseButtonEventArgs)
{
var window = this.ParentWindow;
if (window != null && this.Position != Position.Bottom && Mouse.GetPosition((IInputElement)sender).Y <= window.TitlebarHeight && window.TitlebarHeight > 0)
{
MetroWindow.DoWindowTitleThumbChangeWindowStateOnMouseDoubleClick(window, mouseButtonEventArgs);
}
}