using System;
class Rubbish
{
public void Say()
{
Console.Write("Hello");
}
}
static class RubbishExtensions
{
public static void Say(this Rubbish argRubbish, string argString)
{
Console.Write(argString);
}
}
class Program
{
static void Main(string[] args)
{
Rubbish theRubbish = new Rubbish();
theRubbish.Say("Hey");
Console.ReadKey(false);
}
}