updateCharset(responseData);

        final ResultData resultData = new ResultData();
        resultData.setTransformerName(getName());

        try {
            // data
            storeData(responseData, resultData);

            if (isHtml(responseData) && !responseData.isNoFollow()) {
                // urls
                storeChildUrls(responseData, resultData);
            }
        } finally {

    /**
     * Class type returned by getData() method. The default is null(XML content
     * of String).
     */
    protected Class<?> dataClass = null;

    @Override
    protected void storeData(final ResponseData responseData, final ResultData resultData) {
        final DOMParser parser = getDomParser();
        try (final InputStream in = responseData.getResponseBody()) {

    public FessConfig getFessConfig() {
        return fessConfig;
    }

    @Override
    public Logger getLogger() {
        return logger;
    }

    @Override
    protected void storeData(final ResponseData responseData, final ResultData resultData) {
        final DOMParser parser = getDomParser();
        try (final BufferedInputStream bis = new BufferedInputStream(responseData.getResponseBody())) {