message: generalize docstring
diff: @@ -117,10 +117,8 @@ class TestCluster(object):
  def restart_dispatcher(self):
  """Stops `dispatcher` and creates a new dispatcher with the same port.
  - When the dispatcher is restarted with `fault-tolerant_mode=False`,
  - the new dispatcher is unable to find the `dataset_id` of the already
  - created dataset and thus perpetually throws a warn message until it
  - times out. Thus, the test bed prevents this scenario.
  + Restarting is supported only when the dispatcher is configured with
  + `fault_tolerant_mode=True`.
  """
  if not self.dispatcher._config.fault_tolerant_mode:
  raise ValueError(
  