code: def ListChildPathInfos(self, client_id, path_type, components,
                           timestamp=None):
      
      return self.ListDescendentPathInfos(
          client_id, path_type, components, max_depth=1, timestamp=timestamp)
docs: Lists path info records that correspond to children of given path.
  
      Args:
        client_id: An identifier string for a client.
        path_type: A type of a path to retrieve path information for.
        components: A tuple of path components of a path to retrieve child path
          information for.
        timestamp: If set, lists only descendants that existed only at that
          timestamp.
  
      Returns:
        A list of `rdf_objects.PathInfo` instances sorted by path components.