{
            ENotificationImpl notification =
              new ENotificationImpl
                (eContainer, 
                 Notification.SET, 
                 EcorePackage.EOPERATION__EEXCEPTIONS, 
                 oldERawType,
                 newERawType,
                 ((EOperation)eContainer).getEGenericExceptions().indexOf(this), 
                 false);
            
            if (msgs == null)
            {
              msgs = notification;
            }
            else
            {
              msgs.add(notification);
            }
          }