code: def add_notification(self, notification):
          
          if notification.uuid in self.actions:
              logger.warning("Already existing notification: %s", notification)
              return
  
          logger.debug("Adding a notification: %s", notification)
          self.actions[notification.uuid] = notification
          self.nb_notifications += 1
  
          # A notification which is not a master one asks for a brok
          if notification.contact is not None:
              self.add(notification.get_initial_status_brok())
docs: Add a notification into actions list
  
          :param notification: notification to add
          :type notification: alignak.notification.Notification
          :return: None