public static CartShipmentItem ToWebModel(this VirtoCommerce.Client.Model.VirtoCommerceCartModuleWebModelShipmentItem shipmentItemDto, ShoppingCart cart)
        {
            var retVal = new CartShipmentItem();
            retVal.InjectFrom(shipmentItemDto);
            retVal.LineItem = cart.Items.FirstOrDefault(x => x.Id == shipmentItemDto.LineItemId);

            return retVal;
        }
        public static CartShipmentItem ToWebModel(this VirtoCommerceCartModuleWebModelShipmentItem serviceModel, ShoppingCart cart)
        {
            var webModel = new CartShipmentItem();

            webModel.InjectFrom<NullableAndEnumValueInjecter>(serviceModel);

            webModel.LineItem = cart.Items.FirstOrDefault(x => x.Id == serviceModel.LineItemId);

            return webModel;
        }
        public static CartShipmentItem ToShipmentItem(this LineItem lineItem)
        {
            var shipmentItem = new CartShipmentItem();

            shipmentItem.LineItem = lineItem;
            shipmentItem.Quantity = lineItem.Quantity;

            return shipmentItem;
        }