docs: def _get_roots(self):
          """
          Return URL roots for this storage.
  
          Returns:
              tuple of str or re.Pattern: URL roots
          """
  
          return (
              # OSS Scheme
              # - oss://<bucket>/<key>
              'oss://',
  
              # URL (With common aliyuncs.com endpoint):
              # - http://<bucket>.oss-<region>.aliyuncs.com/<key>
              # - https://<bucket>.oss-<region>.aliyuncs.com/<key>
  
              # Note: "oss-<region>.aliyuncs.com" may be replaced by another
              # endpoint
  
              _re.compile((r'https?://[\w-]+.%s' % self._endpoint.split(
                  '//', 1)[1]).replace('.', r'\.')))