Kona.Model.Order.AdjustQuantity C# (CSharp) Method

        public virtual void AdjustQuantity(Product product, int newQuantity)
        {
            OrderItem itemToAdjust = FindItem(product);
            if (itemToAdjust != null) {
                if (newQuantity <= 0) {
                    RemoveItem(product);
                } else {
                    itemToAdjust.AdjustQuantity(newQuantity);
                }

            }
        }