public class SimpleCardFactory

{

    public Card CreateCard()

    {

        return new Card();

    }

}

​

public class Card

{

}

​

public class Program

{

    public static void Main()

    {

        RunClient(new SimpleCardFactory());

    }

​

    public static void RunClient(SimpleCardFactory simpleCardFactory)

    {

        System.Console.WriteLine("Doing work");

        var card = simpleCardFactory.CreateCard();

        System.Console.WriteLine("- " + card);

    }

}