private final Service delegate = new DelegateService();

  @WeakOuter
  private final class DelegateService extends AbstractService {
    @Override
    protected final void doStart() {
      MoreExecutors.renamingDecorator(executor(), threadNameSupplier)
          .execute(
              () -> {
                try {
                  startUp();
                  notifyStarted();
                } catch (Throwable t) {

import static com.google.common.util.concurrent.MoreExecutors.listeningDecorator;
import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.MoreExecutors.renamingDecorator;
import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination;
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;

   *
   * @param executor The executor to decorate
   * @param nameSupplier The source of names for each task
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  static Executor renamingDecorator(final Executor executor, final Supplier<String> nameSupplier) {
    checkNotNull(executor);
    checkNotNull(nameSupplier);
    return new Executor() {
      @Override
      public void execute(Runnable command) {

import static com.google.common.util.concurrent.MoreExecutors.listeningDecorator;
import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.MoreExecutors.renamingDecorator;
import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination;
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;

  /* use AbstractService for state management */
  private final Service delegate =
      new AbstractService() {
        @Override
        protected final void doStart() {
          Executor executor = MoreExecutors.renamingDecorator(executor(), () -> serviceName());
          executor.execute(
              () -> {
                try {
                  startUp();
                  notifyStarted();

        }
      }
    }

    private final Runnable task = new Task();

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