final String content = UNESCAPE_HTML4.translate(new String(InputStreamUtil.getBytes(bis), enc));
            return createExtractData(content);
        } catch (final Exception e) {
            throw new ExtractException(e);
        }
    }

    protected ExtractData createExtractData(final String content) {
        return new ExtractData(extractString(content));
    }

    protected Map<String, String> metadataXpathMap = new HashMap<>();

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

    @Override
    protected ExtractData createExtractData(final String content) {
        final DOMParser parser = getDomParser();
        try (final Reader reader = new StringReader(content)) {
            parser.parse(new InputSource(reader));