message: mod _CoordinatedSessionCreator
diff: @@ -535,7 +535,7 @@ class _MonitoredSession(object):
  # __exit__ should return True to suppress an exception.
  return exception_type is None
  - class _CoordinatedSessionCreator(object):
  + class _CoordinatedSessionCreator(SessionCreator):
  """Factory for the _RecoverableSession."""
  def __init__(self, session_creator, hooks, stop_grace_period_secs):
  