docs: def _split_path_by_reserved_name(self, path):
          """Return: object_tree_path, resolver, controlled_path."""
          for i, e in enumerate(path):
              if e in self._resolvers or e == self._get_readme_filename():
                  return path[:i], path[i], path[i + 1 :]
          raise d1_onedrive.impl.onedrive_exceptions.PathException(
              'Invalid folder: %s' % str(path)
          )