public static void AdapterExample()
        {
            Sparrow  sparrow = new Sparrow();
            IToyDuck toyDuck = new PlasticToyDuck();

            IToyDuck birdAdapter = new BirdAdapter(sparrow);

            Console.WriteLine("Sparrow...");
            sparrow.Fly();
            sparrow.MakeSound();

            Console.WriteLine("ToyDuck...");
            toyDuck.Squeak();

            Console.WriteLine("BirdAdapter");
            birdAdapter.Squeak();
        }
 public BirdAdapter(Sparrow sparrow)
 {
     _sparrow = sparrow;
 }