public static int MainMethod(string[] args)
        {
            US u = new US();

            u.Foo(u);
            return(0);
        }
 public static int MainMethod(string[] args)
 {
     US u = new US();
     u.Foo(u);
     return 0;
 }
 public static void Foo(this US u, dynamic d)
 {
 }