def reply(self, message: str) -> 'Comment':
        """
        Add a reply to the comment.

        :param message:
            The content of the reply comment.
        """
        url = self.get_type_url()
        data = self.construct_params_from_message(message)
        data['item'] = {
            'type': 'comment',
            'id': self.object_id
        }
        box_response = self._session.post(url, data=json.dumps(data))
        response = box_response.json()
        return self.translator.translate(
            session=self._session,
            response_object=response,
        )