public void Test1()
{
IFactoryWithNotifier factory = new ConcreteFactory();
Subscribe subscribe = new Subscribe();
ObjectCreateHandler <IProduct> callback = new ObjectCreateHandler <IProduct>(subscribe.SetProduct);
Assert.IsNull(subscribe.GetProduct());
factory.Create(callback);
Assert.IsNotNull(subscribe.GetProduct());
}
public void Create(ObjectCreateHandler <IProduct> callback)
{
IProduct product = Create();
callback(product);
}