return delayMillisAtNoUrlInQueue;
    }

    /**
     * Sets the delay in milliseconds when no URL is in the queue.
     * @param delayMillisAtNoUrlInQueue delay in milliseconds
     */
    public void setDelayMillisAtNoUrlInQueue(final long delayMillisAtNoUrlInQueue) {
        this.delayMillisAtNoUrlInQueue = delayMillisAtNoUrlInQueue;
    }

    /**

        return delayMillisAtNoUrlInQueue;
    }

    /**
     * Sets the delay time in milliseconds when there are no URLs in the queue.
     *
     * @param delayMillisAtNoUrlInQueue the delay time in milliseconds when no URLs are available
     */
    public void setDelayMillisAtNoUrlInQueue(final long delayMillisAtNoUrlInQueue) {
        this.delayMillisAtNoUrlInQueue = delayMillisAtNoUrlInQueue;
    }

     */
    public void test_constructorWithParams() {
        final Map<String, Long> params = new HashMap<>();
        params.put("delayMillisAfterProcessing", 100L);
        params.put("delayMillisAtNoUrlInQueue", 200L);
        params.put("delayMillisBeforeProcessing", 300L);
        params.put("delayMillisForWaitingNewUrl", 400L);

        final DefaultIntervalController controller = new DefaultIntervalController(params);

        controller.delayMillisBeforeProcessing = waittime;
        controller.delayMillisAfterProcessing = 0L;
        controller.delayMillisForWaitingNewUrl = 0L;
        controller.delayMillisAtNoUrlInQueue = 0L;

        final Callable<Integer> testCallable = new Callable<Integer>() {
            public Integer call() throws Exception {
                CrawlingParameterUtil.setUrlQueue(q);