static void Main(string[] args)
{
ObjectStruture o = new ObjectStruture();
o.Anexar(new ConcreteElementA());
o.Anexar(new ConcreteElementB());
ConcretVisitor1 v1 = new ConcretVisitor1();
ConcreteVisitor2 v2 = new ConcreteVisitor2();
o.Aceept(v1);
o.Aceept(v2);
Console.ReadKey();
}