static void GetHolidaysAvailableForUS()
 {
     var client = new HolidayService.HolidayService2SoapClient("HolidayService2Soap");
     HolidayService.HolidayCode[] holidays = client.GetHolidaysAvailable(HolidayService.Country.UnitedStates);
     foreach (var holiday in holidays)
     {
         Console.WriteLine(holiday.Code);
     }
 }