notifyFailed(t);
                }
              });
    }

    @Override
    public String toString() {
      return AbstractIdleService.this.toString();
    }
  }

  /** Constructor for use by subclasses. */
  protected AbstractIdleService() {}

  /** Start the service. */
  protected abstract void startUp() throws Exception;

  /** Stop the service. */

  private static class DefaultService extends AbstractIdleService {
    @Override
    protected void startUp() throws Exception {}

    @Override
    protected void shutDown() throws Exception {}
  }

  public void testFunctionalServiceStartStop() {
    AbstractIdleService service = new DefaultService();
    service.startAsync().awaitRunning();

  private static class DefaultService extends AbstractIdleService {
    @Override
    protected void startUp() throws Exception {}

    @Override
    protected void shutDown() throws Exception {}
  }

  public void testFunctionalServiceStartStop() {
    AbstractIdleService service = new DefaultService();
    service.startAsync().awaitRunning();

 * easier.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 9.0 (in 1.0 as {@code com.google.common.base.Service})
 */
@DoNotMock("Create an AbstractIdleService")
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public interface Service {
  /**
   * If the service state is {@link State#NEW}, this initiates service startup and returns