static void Main(string[] args)
{
Console.WriteLine("***** Simple Interface Hierarchy *****");
// Call from an object level.
BitmapImage bitmap = new BitmapImage();
bitmap.Draw();
bitmap.DrawInBoudingBox(10, 10, 100, 150);
bitmap.DrawUpsideDown();
// Get IAdvancedDraw explicitly.
if (bitmap is IAdvancedDraw advancedDraw)
{
advancedDraw.DrawUpsideDown();
}
Console.ReadLine();
}