public JsonResult AddToWishList(AddToWishListInputModel model)
        {
            try
            {
                Assert.ArgumentNotNull(model, "model");

                var validationResult = new BaseJsonResult();
                this.ValidateModel(validationResult);
                if (validationResult.HasErrors)
                {
                    return Json(validationResult, JsonRequestBehavior.AllowGet);
                }

                var wishLists = new List<WishListHeader>();
                var response = this.WishListManager.AddLinesToWishList(this.CurrentStorefront, this.CurrentVisitorContext, model);
                var result = new WishListsBaseJsonResult(response.ServiceProviderResult);
                if (response.ServiceProviderResult.Success && response.Result != null)
                {
                    wishLists = this.WishListsHeaders(result);
                }

                result.Initialize(wishLists);
                return Json(result, JsonRequestBehavior.AllowGet);
            }
            catch (Exception e)
            {
                CommerceLog.Current.Error("AddToWishList", this, e);
                return Json(new BaseJsonResult("AddToWishList", e), JsonRequestBehavior.AllowGet);
            }
        }
        /// <summary>
        /// Adds the lines to wish list.
        /// </summary>
        /// <param name="storefront">The storefront.</param>
        /// <param name="visitorContext">The visitor context.</param>
        /// <param name="model">The model.</param>
        /// <returns>
        /// The manager response with the wish list as the result.
        /// </returns>
        public virtual ManagerResponse<AddLinesToWishListResult, WishList> AddLinesToWishList([NotNull] CommerceStorefront storefront, [NotNull] VisitorContext visitorContext, AddToWishListInputModel model)
        {
            Assert.ArgumentNotNull(storefront, "storefront");
            Assert.ArgumentNotNull(visitorContext, "visitorContext");
            Assert.ArgumentNotNull(model, "model");

            var product = new CommerceCartProduct
            {
                ProductCatalog = model.ProductCatalog,
                ProductId = model.ProductId,
                ProductVariantId = model.VariantId
            };

            var line = new WishListLine
            {
                Product = product,
                Quantity = model.Quantity == null ? 1 : (uint)model.Quantity
            };

            if (line.Product.ProductId.Equals(storefront.GiftCardProductId, StringComparison.OrdinalIgnoreCase))
            {
                line.Properties.Add("GiftCardAmount", model.GiftCardAmount);
            }

            // create wish list
            if (model.WishListId == null && !string.IsNullOrEmpty(model.WishListName))
            {
                var newList = this.CreateWishList(storefront, visitorContext, model.WishListName).Result;
                if (newList == null)
                {
                    return new ManagerResponse<AddLinesToWishListResult, WishList>(new AddLinesToWishListResult { Success = false }, null);
                }

                model.WishListId = newList.ExternalId;
            }

            var result = this.AddLinesToWishList(storefront, visitorContext, model.WishListId, new List<WishListLine> { line });

            return new ManagerResponse<AddLinesToWishListResult, WishList>(result.ServiceProviderResult, result.ServiceProviderResult.WishList);
        }