/**
     * Creates and configures a DOM parser for parsing HTML content.
     *
     * @return a configured DOMParser instance
     * @throws CrawlerSystemException if the parser configuration is invalid
     */
    protected DOMParser getDomParser() {
        try {
            final DOMParser parser = new DOMParser();
            // feature
            for (final Map.Entry<String, String> entry : featureMap.entrySet()) {