S>   public void Move(int a, int b)
S>   {
S>       // MoveObject(ref this, a, b);
S>       object obj = this;
S>       MoveObject(ref obj, a, b);
S>       this= (Point)obj;
S>       Console.WriteLine("point from this: {0}.{1}", x, y);
S>   }
S>