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

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

            if (shipCityList.Count == 1)
                return queryable.ByShipCity(shipCityList[0]);

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

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

            if (shipCityList.Count == 1)
                return queryable.ByShipCity(shipCityList[0]);

            return queryable.ByShipCity(shipCityList);
        }