* @throws URISyntaxException if the URI is malformed
     */
    protected URI getBaseUri(final String currentUrl, final String baseHref) throws URISyntaxException {
        if (baseHref != null) {
            return getURI(currentUrl, baseHref);
        }
        return URI.create(currentUrl);
    }

    /**
     * Gets child URL extraction rules from configuration.
     *