public void RemoveProduct(Contracts.IProduct product) { Validator.CheckIfNull(products); this.products.Remove(product); }
public bool ContainsProduct(Contracts.IProduct product) { Validator.CheckIfNull(products); return(this.products.Contains(product)); }
public void AddProduct(Contracts.IProduct product) { Validator.CheckIfNull(products); this.products.Add(product); }