code: def inform(self, connection, msg):
          
          if isinstance(connection, ClientRequestConnection):
              self._logger.warn(
                  'Deprecation warning: do not use self.inform() '
                  'within a reply handler context -- use req.inform()\n'
                  'Traceback:\n %s', "".join(traceback.format_stack()))
              # Get the underlying ClientConnection instance
              connection = connection.client_connection
          connection.inform(msg)
docs: Send an inform message to a particular client.
  
          Should only be used for asynchronous informs. Informs
          that are part of the response to a request should use
          :meth:`reply_inform` so that the message identifier
          from the original request can be attached to the
          inform.
  
          Parameters
          ----------
          connection : ClientConnection object
              The client to send the message to.
          msg : Message object
              The inform message to send.