* @param urlQueue the URL queue item containing the URL to check
     * @return true if the content has been updated and should be crawled, false otherwise
     */
    @Override
    protected boolean isContentUpdated(final CrawlerClient client, final UrlQueue<?> urlQueue) {
        if (ComponentUtil.getFessConfig().isIncrementalCrawling()) {

            final SystemHelper systemHelper = ComponentUtil.getSystemHelper();