/** The raw data. */
    protected Object rawData = null;

    /** The serializer. */
    protected Function<Object, byte[]> serializer;

    /**
     * Creates a new ResultData instance.
     */
    public ResultData() {
        super();
    }

    /**
     * Set the raw data.
     * @param rawData the raw data object to set
     */
    public void setRawData(final Object rawData) {

            final UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();
            final ResultData resultData = new ResultData();
            resultData.setData(new byte[0]);
            resultData.setEncoding(Constants.UTF_8);
            resultData.setTransformerName(Constants.NO_TRANSFORMER);
            processResult(urlQueue, responseData, resultData);
        } else if (isSuccessful(responseData)) {
            if (transformer == null) {

     * @param resultData the result data to be processed
     * @return the processed result data after all ingesters have been applied
     */
    private ResultData ingest(final ResponseData responseData, final ResultData resultData) {
        if (ingestFactory == null) {
            return resultData;
        }
        ResultData target = resultData;

        } catch (final Exception e) {
            throw new CrawlingAccessException("Could not extract data.", e);
        }

        final ResultData resultData = new ResultData();
        resultData.setTransformerName(getName());
        try {
            resultData.setData(content.getBytes(charsetName));
        } catch (final UnsupportedEncodingException e) {
            if (logger.isInfoEnabled()) {

        }

        @Override
        public ResultData transform(ResponseData responseData) {
            if (throwInTransform) {
                throw new CrawlerSystemException("Transform exception");
            }

            ResultData resultData = new ResultData();
            resultData.setTransformerName(name);
            return resultData;
        }

        @Override

        }

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

        try (BufferedInputStream bis = new BufferedInputStream(responseData.getResponseBody())) {
            resultData.setData(IOUtils.toByteArray(bis));
            resultData.setEncoding(responseData.getCharSet());
            return resultData;
        } catch (final IOException e) {

            if (returnedResultData != null) {
                return returnedResultData;
            }

            // Create default ResultData
            ResultData resultData = new ResultData();
            resultData.setTransformerName(getName());
            return resultData;
        }

        @Override
        public Object getData(AccessResultData<?> accessResultData) {

        responseData.setCharSet(Constants.UTF_8);
        responseData.setResponseBody(data);
        responseData.setMimeType("text/plain");
        final ResultData resultData = textTransformer.transform(responseData);
        assertEquals("xyz", new String(resultData.getData(), resultData.getEncoding()));
    }

    public void test_transform_html() throws Exception {

 * responseData.setUrl("http://example.com");
 *
 * ResultData resultData = new ResultData();
 *
 * transformer.storeData(responseData, resultData);
 *
 * String xmlData = new String(resultData.getData(), resultData.getEncoding());
 * System.out.println(xmlData);
 * </pre>
 *
 * <p>
 * Configuration options:
 * </p>
 * <ul>

    @Override
    public ResultData transform(final ResponseData responseData) {
        if (responseData == null || !responseData.hasResponseBody()) {
            throw new CrawlingAccessException("No response body.");
        }

        // encoding
        updateCharset(responseData);

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

        try {