public static void RemoveEDMDesignerViewContent(IEDMDesignerChangeWatcherObserver observer)
 {
     _observers.Remove(observer);
 }
 public static void RemoveEDMDesignerViewContent(IEDMDesignerChangeWatcherObserver observer)
 {
     _observers.Remove(observer);
 }
 public static void AddEDMDesignerViewContent(IEDMDesignerChangeWatcherObserver observer)
 {
     _observers.Add(observer);
 }
 public static void AddEDMDesignerViewContent(IEDMDesignerChangeWatcherObserver observer)
 {
     _observers.Add(observer);
 }