using System;

using System.Threading;

using System.Threading.Tasks;

​

public class Program

{

    public static void Main()

    {

        var s = new TestStartup();

        Console.WriteLine(s.Get());

    }

}

​

public class Startup

{

    public string Get()

    {

        return "Startup";

    }

}

​

public class TestStartup : Startup

{

    public new string Get()

    {

        return base.Get();

        return "TestStartup";

    }

}