public IDispenser CreateDispenser(DrinkEnum drinkType)
            {
            IDispenser dispenser = null;

            if(drinkType == DrinkEnum.Coffee) dispenser = new CoffeeDispenser();
            if(drinkType == DrinkEnum.Hotwater) dispenser = new HotwaterDispenser();

            return dispenser;
            }
        public IDispenser CreateDispenser(DrinkEnum drinkType)
        {
            IDispenser dispenser = null;

            if (drinkType == DrinkEnum.Coffee)
            {
                dispenser = new CoffeeDispenser();
            }
            if (drinkType == DrinkEnum.Hotwater)
            {
                dispenser = new HotwaterDispenser();
            }

            return(dispenser);
        }