delay := env.Get(EnvDelayLegacy, "")
	if delay == "" {
		delay = env.Get(EnvDelay, kvs.GetWithDefault(Delay, DefaultKVS))
	}
	cfg.Delay, err = strconv.ParseFloat(delay, 64)
	if err != nil {
		return err
	}
	maxWait := env.Get(EnvMaxWaitLegacy, "")
	if maxWait == "" {
		maxWait = env.Get(EnvMaxWait, kvs.GetWithDefault(MaxWait, DefaultKVS))
	}
	cfg.MaxWait, err = time.ParseDuration(maxWait)
	if err != nil {
		return err

    long lastDelay;
    TimeUnit lastUnit;

    void assertLastMethodCalled(String method, long delay, TimeUnit unit) {
      assertEquals(method, lastMethodCalled);
      assertEquals(delay, lastDelay);
      assertEquals(unit, lastUnit);
    }

    void assertLastMethodCalled(String method, long initialDelay, long delay, TimeUnit unit) {
      assertEquals(method, lastMethodCalled);

        while (!crawlerRunning) {
            ThreadUtil.sleepQuietly(crawlerWaitMillis);
        }
    }

    public void delayByRules() {
        final long delay = getDelay();
        if (delay > 0) {
            ThreadUtil.sleep(delay);
        }
    }

    protected long getDelay() {
        if (ruleList.isEmpty()) {
            return 0;
        }
        final Calendar cal = getCurrentCal();

                    callableThrowing(exception), DELAY_MS, TimeUnit.MILLISECONDS));
    assertThat(e.getCause()).isEqualTo(exception);
  }

  public void testCallUninterruptiblyWithTimeout_propagatesReturnValue() throws Exception {
    String result =
        timeLimiter.callUninterruptiblyWithTimeout(
            Callables.returning(RETURN_VALUE), DELAY_MS, TimeUnit.MILLISECONDS);

  boolean called = false;

  private void assertSingleCallWithCorrectParameters(
      Runnable command, long initialDelay, long delay, TimeUnit unit) {
    assertFalse(called); // only called once.
    called = true;
    assertEquals(INITIAL_DELAY, initialDelay);
    assertEquals(DELAY, delay);
    assertEquals(UNIT, unit);
    assertEquals(testRunnable, command);
  }

  public void testFixedRateSchedule() {

      recordedCommand = command;
      recordedDelay = delay;
      recordedTimeUnit = unit;
      return ImmediateScheduledFuture.of("schedule");
    }

    @Override
    public <V> ListenableScheduledFuture<V> schedule(
        Callable<V> callable, long delay, TimeUnit unit) {
      recordedDelay = delay;
      recordedTimeUnit = unit;
      try {

    @Override
    public <V> ListenableScheduledFuture<V> schedule(
        Callable<V> callable, long delay, TimeUnit unit) {
      return NeverScheduledFuture.create();
    }

    @Override
    public ListenableScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
      return NeverScheduledFuture.create();
    }

    @Override

     * @param {string} options.prefix - Prefix to use for data attributes.
     * @param {number} options.startDelay - Delay before animation, in ms.
     * @param {number} options.typeDelay - Delay between each typed character, in ms.
     * @param {number} options.lineDelay - Delay between each line, in ms.
     * @param {number} options.progressLength - Number of characters displayed as progress bar.

    long lastDelay;
    TimeUnit lastUnit;

    void assertLastMethodCalled(String method, long delay, TimeUnit unit) {
      assertEquals(method, lastMethodCalled);
      assertEquals(delay, lastDelay);
      assertEquals(unit, lastUnit);
    }

    void assertLastMethodCalled(String method, long initialDelay, long delay, TimeUnit unit) {
      assertEquals(method, lastMethodCalled);

  }

  @Override
  public final ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
    return delegate.schedule(wrapTask(command), delay, unit);
  }

  @Override
  public final <V extends @Nullable Object> ScheduledFuture<V> schedule(
      Callable<V> task, long delay, TimeUnit unit) {
    return delegate.schedule(wrapTask(task), delay, unit);
  }

  @Override
  public final ScheduledFuture<?> scheduleAtFixedRate(