}

    /**
     * Gets the delay time in milliseconds when there are no URLs in the queue.
     *
     * @return the delay time in milliseconds when no URLs are available
     */
    public long getDelayMillisAtNoUrlInQueue() {
        return delayMillisAtNoUrlInQueue;
    }

    /**
     * Sets the delay time in milliseconds when there are no URLs in the queue.
     *

        assertEquals(2000L, controller.getDelayMillisAtNoUrlInQueue());

        controller.setDelayMillisAtNoUrlInQueue(10000L);
        assertEquals(10000L, controller.getDelayMillisAtNoUrlInQueue());

        controller.setDelayMillisAtNoUrlInQueue(0L);
        assertEquals(0L, controller.getDelayMillisAtNoUrlInQueue());
    }

    /**