*
     * @param responseData the response data to process
     */
    @Override
    public void process(final ResponseData responseData) {
        if (isNotModified(responseData)) {
            final UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();
            final ResultData resultData = new ResultData();
            resultData.setData(new byte[0]);

                        && responseData.getLastModified().getTime() <= urlQueue.getLastModified().longValue()
                        && responseData.getHttpStatusCode() == 200) {
                    log(logHelper, LogType.NOT_MODIFIED, crawlerContext, urlQueue);

                    responseData.setExecutionTime(SystemUtil.currentTimeMillis() - startTime);
                    responseData.setParentUrl(urlQueue.getParentUrl());

                    return true;
                }
                if (responseData.getLastModified().getTime() <= lastModified.getTime() && httpStatusCode == 200) {

                    log(logHelper, LogType.NOT_MODIFIED, crawlerContext, urlQueue);

                    responseData.setExecutionTime(systemHelper.getCurrentTimeAsLong() - startTime);
                    responseData.setParentUrl(urlQueue.getParentUrl());