code: def _notify(self, log_level, message):
          
          timestamp = datetime.datetime.utcnow()
          logger.log(log_level, str(message))
          try:
              self._callback(log_level, message, timestamp)
          except Exception as ex:
              logger.warning(consts.LOG_MSG_CALLBACK_FAILURE % str(ex))
docs: Calls the callback function and logs messages using the PySDK logger
          :param log_level: An integer representing the log level, as specified
                            in the Python `logging` library
          :param message:   The actual message to be sent to the logger and the
                            `callback` function