public INotification EnqueueNotification(NotificationType type, string title, string text,
     Guid handlerWorkflowState, bool urgent)
 {
   DefaultNotification notification = new DefaultNotification(type, title, text, handlerWorkflowState);
   EnqueueNotification(notification, urgent);
   return notification;
 }
 public INotification EnqueueNotification(NotificationType type, string title, string text, bool urgent)
 {
   DefaultNotification notification = new DefaultNotification(type, title, text);
   EnqueueNotification(notification, urgent);
   return notification;
 }