data.setResponseBody(tempFile, true);

        assertTrue(data.hasResponseBody());

        // Close should delete the temporary file
        data.close();
    }

    public void test_hasResponseBodyNoBody() {
        // Test hasResponseBody when no body is set
        ResponseData data = new ResponseData();
        assertFalse(data.hasResponseBody());
    }

    public void test_getResponseBodyNull() {

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

        final ExtractorFactory extractorFactory = crawlerContainer.getComponent("extractorFactory");

        // Execute - should not throw any exception
        processor.process(responseData);

        // Verify ResponseData still has body
        assertTrue(responseData.hasResponseBody());
        assertNotNull(responseData.getResponseBody());
    }

    public void test_processWithResponseDataContainingMetadata() {
        // Test process with ResponseData containing metadata

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

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

    }

    /**
     * Checks if this response has a response body.
     *
     * @return true if the response has a body (either as bytes or file), false otherwise
     */
    public boolean hasResponseBody() {
        return responseBodyBytes != null || responseBodyFile != null;
    }

    /**
     * Gets the response body as an InputStream.

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

        try (final InputStream is = responseData.getResponseBody()) {

     */
    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.");
        }

    private final ThreadLocal<XPathAPI> xpathAPI = new ThreadLocal<>();

    @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();