public static void Run()
{
Console.WriteLine("Case4 \n");
var successor = new Successor();
Console.WriteLine("var successor = new Successor()");
Console.WriteLine("successor.CommonProc()");
successor.CommonProc();
Console.WriteLine();
var director = new Director(new CommonModel());
Console.WriteLine("var director = new Director(new CommonUtil())");
Console.WriteLine("director.CommonProc()");
director.CommonProc();
Console.WriteLine();
var mixture = new Mixture();
Console.WriteLine("var mixture = new Mixture()");
Console.WriteLine("mixture.Hello(\"World\")");
Console.WriteLine(mixture.Hello("World"));
Console.WriteLine();
}