if (millis != null) {
            delayMillisAfterProcessing = millis;
        }

        millis = params.get("delayMillisAtNoUrlInQueue");
        if (millis != null) {
            delayMillisAtNoUrlInQueue = millis;
        }

        millis = params.get("delayMillisBeforeProcessing");
        if (millis != null) {
            delayMillisBeforeProcessing = millis;
        }

        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;
    }