How to use the jardin.config function in jardin

def log_db_connection(self, name, db_config):
        host = getattr(db_config, 'host', None) or '_'  # use "_" for both missing attr or None value cases
        port = getattr(db_config, 'port', None) or '_'
        user = getattr(db_config, 'username', None) or '_'
        database = getattr(db_config, 'database', None) or '_'
        config.logger.debug("[{}]: database connection {}@{}:{}/{}".format(name, user, host, port, database))

def watermark(self):
        return "/*%s | %s */" % (config.WATERMARK, self.stack)