/// <summary>
/// Adds an item to the shopping cart
/// </summary>
/// <param name="shoppingCart">Shopping cart entity</param>
/// <param name="item">Item to be added</param>
public static ShoppingCart AddItemToShoppingCart(this ShoppingCart shoppingCart, IItem item)
{
var cart = shoppingCart.AddItemToItemList(item);
cart = cart.UpdateItemCountMapUponAdd();
cart = cart.UpdateShoppingCartValues();
return(cart);
}
