public static IQueryable<PetShop.Core.Data.Order> ByBillAddr1(this IQueryable<PetShop.Core.Data.Order> queryable, string billAddr1, params string[] additionalValues)
        {
            var billAddr1List = new List<string> { billAddr1 };

            if (additionalValues != null)
                billAddr1List.AddRange(additionalValues);

            if (billAddr1List.Count == 1)
                return queryable.ByBillAddr1(billAddr1List[0]);

            return queryable.ByBillAddr1(billAddr1List);
        }
        public static IQueryable<Petshop.Data.Entities.Order> ByBillAddr1(this IQueryable<Petshop.Data.Entities.Order> queryable, System.String billAddr1, params System.String[] additionalValues)
        {
            var billAddr1List = new List<System.String> { billAddr1 };

            if (additionalValues != null)
                billAddr1List.AddRange(additionalValues);

            if (billAddr1List.Count == 1)
                return queryable.ByBillAddr1(billAddr1List[0]);

            return queryable.ByBillAddr1(billAddr1List);
        }