*
   * @since 29.0 (present with return type {@code ImmutableMultimap} since 14.0)
   */
  @Override
  public ImmutableSetMultimap<State, Service> servicesByState() {
    return state.servicesByState();
  }

  /**
   * Returns the service load times. This value will only return startup times for services that
   * have finished starting.
   *

   *
   * @since 29.0 (present with return type {@code ImmutableMultimap} since 14.0)
   */
  @Override
  public ImmutableSetMultimap<State, Service> servicesByState() {
    return state.servicesByState();
  }

  /**
   * Returns the service load times. This value will only return startup times for services that
   * have finished starting.
   *

    manager.startAsync();
    manager.awaitStopped(10, MILLISECONDS);
    assertThat(manager.servicesByState().keySet()).containsExactly(Service.State.FAILED);
  }

  private static void assertState(
      ServiceManager manager, Service.State state, Service... services) {
    Collection<Service> managerServices = manager.servicesByState().get(state);
    for (Service service : services) {