*/
    protected DataSerializer dataSerializer;

    /**
     * Get the extractor.
     * @param responseData The response data.
     * @return The extractor.
     */
    protected abstract Extractor getExtractor(ResponseData responseData);

    @Override
    public ResultData transform(final ResponseData responseData) {
        if (responseData == null || !responseData.hasResponseBody()) {

            final String mimeType = mimeTypeHelper.getContentType(null, filename);
            if (mimeType != null) {
                final Extractor extractor = extractorFactory.getExtractor(mimeType);
                if (extractor != null) {
                    try (final InputStream in = bodyPart.getInputStream()) {
                        final Map<String, String> map = new HashMap<>();

        final String mimeType = mimeTypeHelper.getContentType(null, filename);
        if (mimeType != null) {
            final Extractor extractor = extractorFactory.getExtractor(mimeType);
            if (extractor != null) {
                try (COSInputStream is = embeddedFile.createInputStream()) {
                    final Map<String, String> map = new HashMap<>();