assertFalse(testExecutor.isTerminated());
    mock.assertLastMethodCalled("isTerminated");
    assertFalse(testExecutor.isShutdown());
    mock.assertLastMethodCalled("isShutdown");
    testExecutor.shutdown();
    mock.assertLastMethodCalled("shutdown");
    List<Runnable> list = testExecutor.shutdownNow();
    mock.assertLastMethodCalled("shutdownNow");
    assertEquals(ImmutableList.of(), list);
  }

    ExecutorService service = mock(ExecutorService.class);
    application.addDelayedShutdownHook(service, 2, SECONDS);
    verify(service, Mockito.never()).shutdown();
    application.shutdown();
    InOrder shutdownFirst = Mockito.inOrder(service);
    shutdownFirst.verify(service).shutdown();
    shutdownFirst.verify(service).awaitTermination(2, SECONDS);
  }

    return delegate().invokeAny(tasks, timeout, unit);
  }

  @Override
  public boolean isShutdown() {
    return delegate().isShutdown();
  }

  @Override
  public boolean isTerminated() {
    return delegate().isTerminated();
  }

  @Override
  public void shutdown() {
    delegate().shutdown();
  }

  @Override
  @CanIgnoreReturnValue
  public List<Runnable> shutdownNow() {

    assertFalse(testExecutor.isTerminated());
    mock.assertLastMethodCalled("isTerminated");
    assertFalse(testExecutor.isShutdown());
    mock.assertLastMethodCalled("isShutdown");
    testExecutor.shutdown();
    mock.assertLastMethodCalled("shutdown");
    List<Runnable> list = testExecutor.shutdownNow();
    mock.assertLastMethodCalled("shutdownNow");
    assertEquals(ImmutableList.of(), list);
  }

  public void testNoOpScheduledExecutorShutdown() {
    ListeningScheduledExecutorService executor = TestingExecutors.noOpScheduledExecutor();
    assertFalse(executor.isShutdown());
    assertFalse(executor.isTerminated());
    executor.shutdown();
    assertTrue(executor.isShutdown());
    assertTrue(executor.isTerminated());
  }

  public void testNoOpScheduledExecutorInvokeAll() throws ExecutionException, InterruptedException {

        return
      }
    }
    throw AssertionError("No such job: $url")
  }

  override fun shutdown() {
    shutdown = true
  }

  override fun shutdownNow(): List<Runnable> {
    throw UnsupportedOperationException()
  }

  override fun isShutdown(): Boolean {
    return shutdown
  }

  override fun isTerminated(): Boolean {
    throw UnsupportedOperationException()
  }

    ExecutorService service = mock(ExecutorService.class);
    application.addDelayedShutdownHook(service, 2, SECONDS);
    verify(service, Mockito.never()).shutdown();
    application.shutdown();
    InOrder shutdownFirst = Mockito.inOrder(service);
    shutdownFirst.verify(service).shutdown();
    shutdownFirst.verify(service).awaitTermination(2, SECONDS);
  }

   */
  @Throws(IOException::class)
  fun shutdown(statusCode: ErrorCode) {
    writer.withLock {
      val lastGoodStreamId: Int
      this.withLock {
        if (isShutdown) {
          return
        }
        isShutdown = true
        lastGoodStreamId = this.lastGoodStreamId
      }
      // TODO: propagate exception message into debugData.

  private boolean shutdown = false;

  @Override
  public void execute(Runnable command) {
    startTask();
    try {
      command.run();
    } finally {
      endTask();
    }
  }

  @Override
  public boolean isShutdown() {
    synchronized (lock) {
      return shutdown;
    }
  }

  @Override
  public void shutdown() {
    synchronized (lock) {
      shutdown = true;

  private final ListeningExecutorService delegate = newDirectExecutorService();

  @Override
  public void shutdown() {
    delegate.shutdown();
  }

  @Override
  public List<Runnable> shutdownNow() {
    return delegate.shutdownNow();
  }

  @Override
  public boolean isShutdown() {
    return delegate.isShutdown();
  }

  @Override
  public boolean isTerminated() {
    return delegate.isTerminated();
  }