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

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

            if (shipCountryList.Count == 1)
                return queryable.ByShipCountry(shipCountryList[0]);

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

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

            if (shipCountryList.Count == 1)
                return queryable.ByShipCountry(shipCountryList[0]);

            return queryable.ByShipCountry(shipCountryList);
        }