public static void Main()
        {
            Beverage beverage = new Expresso();

            Console.WriteLine(beverage.ToString());

            Beverage beverage2 = new DarkRoast();

            beverage2 = new Mocha(beverage2);
            beverage2 = new Mocha(beverage2);
            beverage2 = new Whip(beverage2);
            Console.WriteLine(beverage2.ToString());

            Beverage beverage3 = new HouseBlend
            {
                Size = BeverageSize.Venti
            };

            beverage3 = new Soy(beverage3);
            beverage3 = new Mocha(beverage3);
            beverage3 = new Whip(beverage3);
            Console.WriteLine(beverage3.ToString());
        }