docs: def on_stop(self):
          """
          stop requester
          """
          LOGGER.debug("rabbitmq.Requester.on_stop")
          try:
              self.channel.close()
          except Exception as e:
              LOGGER.warn("rabbitmq.Requester.on_stop - Exception raised while closing channel")
          try:
              self.connection.close()
          except Exception as e:
              LOGGER.warn("rabbitmq.Requester.on_stop - Exception raised while closing connection")