public override void Make()
{
MakeCoffee makeCoffee = this.MakeCoffee();
Console.Write("大杯");
makeCoffee.Making();
}
public MakeCoffeeSingleton(MakeCoffee instance)
{
_instance = instance;
}
public Coffee()
{
_makeCoffee = MakeCoffeeSingleton.Instance();
}