this.pollingFetchSize = pollingFetchSize;
    }

    /**
     * Sets the maximum crawling queue size.
     * @param maxCrawlingQueueSize The maximum crawling queue size.
     */
    public void setMaxCrawlingQueueSize(final int maxCrawlingQueueSize) {
        this.maxCrawlingQueueSize = maxCrawlingQueueSize;
    }