* <p>This class is very similar to {@link SequentialExecutor} with the exception that events can
   * be added without necessarily executing immediately.
   */
  private static final class PerListenerQueue<L> implements Runnable {
    final L listener;
    final Executor executor;

    @GuardedBy("this")
    final Queue<ListenerCallQueue.Event<L>> waitQueue = new ArrayDeque<>();

    @GuardedBy("this")

   * this method to use a custom {@link Executor}, which may configure its worker thread with a
   * specific name, thread group or priority. The returned executor's {@link
   * Executor#execute(Runnable) execute()} method is called when this service is started, and should
   * return promptly.
   *
   * <p>The default implementation returns a new {@link Executor} that sets the name of its threads

    }

    @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
    Interruptenator(Thread interruptee, AtomicBoolean shutdown) {
      super(
          new Runnable() {
            @Override
            public void run() {
              while (!shutdown.get()) {
                interruptee.interrupt();
                Thread.yield();
              }
            }

 *     ...
 *     this.serverSocket = new ServerSocket(...);
 *     this.cleanable = cleaner.register(this, closeServerSocketRunnable(serverSocket));
 *     ...
 *   }
 *
 *   private static Runnable closeServerSocketRunnable(ServerSocket serverSocket) {
 *     return () -> {
 *       if (!serverSocket.isClosed()) {
 *         ...log a message about how nobody called close()...
 *         try {

    assertTrue(ArbitraryInstances.get(ConcurrentMap.class).isEmpty());
    assertTrue(ArbitraryInstances.get(ConcurrentNavigableMap.class).isEmpty());
    ArbitraryInstances.get(Executor.class).execute(ArbitraryInstances.get(Runnable.class));
    assertThat(ArbitraryInstances.get(ThreadFactory.class)).isNotNull();
    assertFreshInstanceReturned(
        BlockingQueue.class,
        BlockingDeque.class,
        PriorityBlockingQueue.class,

 * It is responsible for fetching URLs from the queue, accessing the content,
 * processing the response, and extracting child URLs.
 *
 * <p>
 * This class implements the {@link Runnable} interface, allowing it to be executed in a separate thread.
 * It uses various services and components, such as {@link UrlQueueService}, {@link DataService},

    }

    @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
    Interruptenator(Thread interruptee, AtomicBoolean shutdown) {
      super(
          new Runnable() {
            @Override
            public void run() {
              while (!shutdown.get()) {
                interruptee.interrupt();
                Thread.yield();
              }
            }

    Service service =
        new TestService() {
          @Override
          protected Executor executor() {
            return new Executor() {
              @Override
              public void execute(Runnable command) {}
            };
          }

          @Override
          protected String serviceName() {
            return "Foo";
          }
        };
    TimeoutException e =

          InetAddress.getAllByName(hostname).toList()
    })
    .build()
```

SAM conversion impacts these APIs:

 * Authenticator
 * Dispatcher.setIdleCallback(Runnable)
 * Dns
 * EventListener.Factory
 * HttpLoggingInterceptor.Logger
 * LoggingEventListener.Factory
 * OkHttpClient.Builder.hostnameVerifier(HostnameVerifier)

     * @param waitController The runnable to control waiting between requests.
     * @return A Promise that will be resolved with the SuggestIndexResponse or rejected with an error.
     */
    public Deferred<SuggestIndexResponse>.Promise indexFromDocument(final Supplier<DocumentReader> reader, final int docPerReq,
            final Runnable waitController) {
        if (logger.isInfoEnabled()) {