} finally {
          lock.unlock();
        }
      }
    }

    private final Runnable task = new Task();

    @Override
    protected final void doStart() {
      executorService =
          MoreExecutors.renamingDecorator(executor(), () -> serviceName() + " " + state());
      executorService.execute(
          () -> {
            lock.lock();
            try {