BikeInCity.Web.Biking.HomePort.ProcessCity C# (CSharp) Метод

        public List<City> ProcessCity()
        {
            BikeInCity.Web.HomePortService.ExternalAPI_122Client _client = new BikeInCity.Web.HomePortService.ExternalAPI_122Client();
            var countries = _client.GetCountries("en");

            return null;
        }