public override string ToString()
{
var engine_code = (EngineCode?.Any() ?? false) ? string.Join(",", EngineCode) : "";
var version = (Version?.Any() ?? false) ? string.Join(",", Version) : "";
var engine_capacity = (EngineCapacity?.Any() ?? false) ? string.Join(",", EngineCapacity) : "";
var vin = (Vin?.Any() ?? false) ? string.Join(",", Vin) : "";
var engine_power = (EnginePower?.Any() ?? false) ? string.Join(",", EnginePower) : "";
var gearbox = (Gearbox?.Any() ?? false) ? string.Join(",", Gearbox) : "";
var transmission = (Transmission?.Any() ?? false) ? string.Join(",", Transmission) : "";
var door_count = (DoorCount?.Any() ?? false) ? string.Join(",", DoorCount) : "";
var nr_seats = (NrSeats?.Any() ?? false) ? string.Join(",", NrSeats) : "";
var color = (Color?.Any() ?? false) ? string.Join(",", Color) : "";
var registration = (Registration?.Any() ?? false) ? string.Join(",", Registration) : "";
//var features = (Features?.Any() ?? false) ? string.Join(",", Features) : "";
return string.Format("ID: " + AdId +
"\nCena: " + PriceRaw +
"\nTytul: " + Title +
"\nOferta od: " + PrivateBusiness +
"\nKategoria: " + Category +
"\nWojewodztwo: " + Region +
"\nMiasto: " + City +
"\nMarka pojazdu: " + Make +
"\nModel pojazdu: " + Model +
"\nKod silnika: " + engine_code +
"\nWersja: " + version +
"\nRok produkcji: " + Year +
"\nPrzebieg: " + Mileage +
"\nPojemnosc skokowa: " + engine_capacity +
"\nVin: " + vin +
"\nRodzaj paliwa: " + FuelType +
"\nMoc: " + engine_power +
"\nSkrzynia biegow: " + gearbox +
"\nNaped: " + transmission +
"\nTyp: " + BodyType +
"\nLiczba drzwi: " + door_count +
"\nLiczba miejsc: " + nr_seats +
"\nKolor: " + color +
"\nNumer rejestracyjny pojazdu: " + registration //+
//"\nWyposazenie: " + features
);
}