public static IQueryable<Petshop.Data.Entities.Cart> ByPrice(this IQueryable<Petshop.Data.Entities.Cart> queryable, System.Decimal price, params System.Decimal[] additionalValues)
        {
            var priceList = new List<System.Decimal> { price };

            if (additionalValues != null)
                priceList.AddRange(additionalValues);

            if (priceList.Count == 1)
                return queryable.ByPrice(priceList[0]);

            return queryable.ByPrice(priceList);
        }
        public static IQueryable<PetShop.Core.Data.Cart> ByPrice(this IQueryable<PetShop.Core.Data.Cart> queryable, decimal price, params decimal[] additionalValues)
        {
            var priceList = new List<decimal> { price };

            if (additionalValues != null)
                priceList.AddRange(additionalValues);

            if (priceList.Count == 1)
                return queryable.ByPrice(priceList[0]);

            return queryable.ByPrice(priceList);
        }