public Airline VName(Airline airline, IAirlineService _airlineService)
{
if (String.IsNullOrEmpty(airline.Name) || airline.Name.Trim() == "")
{
airline.Errors.Add("Name", "Tidak boleh kosong");
}
else if (_airlineService.IsNameDuplicated(airline))
{
airline.Errors.Add("Name", "Tidak boleh diduplikasi");
}
return(airline);
}