code: def handle(self, connection_id, message_content):
          
          try:
              request = self._request_proto()
              request.ParseFromString(message_content)
          except DecodeError:
              LOGGER.info('Protobuf %s failed to deserialize', request)
              return self._wrap_result(self._status.INTERNAL_ERROR)
  
          try:
              response = self._respond(request)
          except _ResponseFailed as e:
              response = e.status
  
          return self._wrap_result(response)
docs: Handles parsing incoming requests, and wrapping the final response.
  
          Args:
              connection_id (str): ZMQ identity sent over ZMQ socket
              message_content (bytes): Byte encoded request protobuf to be parsed
  
          Returns:
              HandlerResult: result to be sent in response back to client