using System;

public class Program

{

    public class A {

        static System.Guid B() { return default(System.Guid); }

    }

    public class C : A {

        private static readonly System.Guid id = System.Guid.NewGuid();

        public static System.Guid B() { return id; }

    }

    public static void Display<T>() where T : A {

        //Console.WriteLine(T.B());

        Console.WriteLine("Wooh");

    }

    public static void Main()

    {

        Display<C>();

        //Console.WriteLine(C.B());

    }

}