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

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

    }

    /**
     * Delays after processing a URL.
     */
    @Override
    protected void delayAfterProcessing() {

        return delayMillisForWaitingNewUrl;
    }

    /**
     * Sets the delay time in milliseconds for waiting for new URLs.
     *
     * @param delayMillisForWaitingNewUrl the delay time in milliseconds for waiting for new URLs
     */
    public void setDelayMillisForWaitingNewUrl(final long delayMillisForWaitingNewUrl) {
        this.delayMillisForWaitingNewUrl = delayMillisForWaitingNewUrl;
    }