using System;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        var b = new B();

        var m = b.GetType().GetMethod("Focus", BindingFlags.ExactBinding);

        m.Invoke(b, null);

        Console.WriteLine("Hello World");

    }

    public class A{

        public void test(){

         Console.WriteLine("A Test");}

    }

    public class B : A{

        public new void test(){

         Console.WriteLine("B Test");

        }

    }

}