docs: def RemoveAllClientLabels(self, client_id):
      """Removes all labels for a given client.
  
      Args:
        client_id: The client_id.
      """
      labels_to_remove = set(
          [l.name for l in data_store.REL_DB.ReadClientLabels(client_id)])
      self.RemoveClientLabels(client_id, labels_to_remove)