/// <summary>
 ///
 /// </summary>
 /// <param name="observer"></param>
 /// <param name="DiametroFinal"></param>
 public void Subscribe(IObserverDiametro observer, double DiametroFinal)
 {
     observer.Diameter = DiametroFinal;
     Observers.Add(observer);
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="observer"></param>
 public void Subscribe(IObserverDiametro observer)
 {
     Observers.Add(observer);
 }