static void Main(string[] args)
{
    DataClient dataclient = new DataClient.Builder()
        .FirstNameClient("Sławomir")
        .LastNameClient("Kowalski")
        .ZipCodeClient("34-174")
        .MyWallet(456.32)
        .HomeNumberClient(23)
        .TownClient("Gdynia")
        .StreetClient("Orzeszkowa")
        .build();

    Console.WriteLine("Dane klienta: "+"\nImie: " + dataclient.FirstNameClient+
        "\nKowalski: " +dataclient.LastNameClient +
        "\nKod pocztowy: " + dataclient.ZipCodeClient +
        "\nPortfel: " + dataclient.MyWallet +
        "\nNumer domu: " + dataclient.HomeNumberClient +
        "\nMiasto: " + dataclient.TownClient +
        "\nUlica: "+dataclient.StreetClient);

        Console.ReadKey();
}