public void RegisterObserver(IProductStockObserver productStockObserver) { Observers.Add(productStockObserver); }
public void RegisterObserver(IProductStockObserver productStockObserver) { Observers.Add(productStockObserver); }
public void RegisterObserver(IProductStockObserver productStockObserver) { Observers.Add(productStockObserver); }
public void RegisterObserver(IProductStockObserver productStockObserver) { Observers.Add(productStockObserver); }