@Override
  public void onServerStart(Server server) {
    if (!done) {
      initCe();
      this.done = true;
    }
  }
@Test
  public void onServerStart_has_no_effect_if_called_twice_to_support_medium_test_doing_startup_tasks_multiple_times() {
    underTest.onServerStart(server);
    reset(processingScheduler, cleaningScheduler);

    underTest.onServerStart(server);

    verifyNoInteractions(processingScheduler, cleaningScheduler);

  }