def meta_changed(self, model, prop_name, info):
        """This method notifies the parent state about changes made to the meta data
        """
        if self.parent is not None:
            msg = info.arg
            # Add information about notification to the signal message
            notification = Notification(model, prop_name, info)
            msg = msg._replace(notification=notification)
            info.arg = msg
            self.parent.meta_changed(model, prop_name, info)