How to use the jardin.config.init function in jardin

def db_configs(self, name):
        if len(self._db_configs) == 0:
            config.init()
            for (nme, urls) in config.DATABASES.items():
                if not urls:
                    continue
                # we don't support multi-configs of dictionary format yet; the "else [urls]" is for a dictionary
                url_list = re.split(r'\s+', urls) if isinstance(urls, str) else [urls]
                self._db_configs[nme] = list(map(lambda x: DatabaseConfig(x), url_list))
        return self._db_configs[name]