*/
    protected abstract Extractor getExtractor(ResponseData responseData);

    @Override
    public ResultData transform(final ResponseData responseData) {
        if (responseData == null || !responseData.hasResponseBody()) {
            final String url = responseData != null ? responseData.getUrl() : "unknown";
            throw new CrawlingAccessException("No response body for URL: " + url + ". Cannot transform empty response.");
        }