propertyMap.put(key, value);
    }

    /**
     * Gets the map of parser features.
     *
     * @return the feature map
     */
    public Map<String, String> getFeatureMap() {
        return featureMap;
    }

    /**
     * Sets the map of parser features.
     *
     * @param featureMap the feature map to set
     */
    public void setFeatureMap(final Map<String, String> featureMap) {

        }
    }

    /**
     * Gets the map of parser features.
     *
     * @return the feature map
     */
    public Map<String, String> getFeatureMap() {
        return featureMap;
    }

    /**
     * Sets the map of parser features.
     *
     * @param featureMap the feature map to set
     */
    public void setFeatureMap(final Map<String, String> featureMap) {

We welcome contributions to Fess Crawler! Please follow these guidelines:

1. **Fork** the repository
2. **Create** a feature branch (`git checkout -b feature/amazing-feature`)
3. **Commit** your changes (`git commit -m 'Add amazing feature'`)
4. **Push** to the branch (`git push origin feature/amazing-feature`)
5. **Open** a Pull Request

### Development Setup

```bash
# Clone the repository

     */
    public void addAttribute(final String name, final Object value) {
        attributeMap.put(name, value);
    }

    /**
     * Adds a feature to the factory.
     * @param key The key of the feature.
     * @param value The value of the feature.
     */
    public void addFeature(final String key, final String value) {
        featureMap.put(key, value);
    }

    /**
     * Adds a field rule.

     * @param parser the SAX parser to configure
     * @throws SAXNotRecognizedException if the parser doesn't recognize the feature
     * @throws SAXNotSupportedException if the parser doesn't support the feature
     */
    protected void disableExternalResources(final SAXParser parser) throws SAXNotRecognizedException, SAXNotSupportedException {
        try {

        {
            xpathTransformer = new XpathTransformer();
            xpathTransformer.setName("xpathTransformer");
            Map<String, String> featureMap = newHashMap();
            featureMap.put("http://xml.org/sax/features/namespaces", "false");
            xpathTransformer.setFeatureMap(featureMap);
            Map<String, String> propertyMap = newHashMap();
            xpathTransformer.setPropertyMap(propertyMap);

 *
 * <p>The robots.txt protocol is implemented according to the standard specification,
 * supporting pattern matching for user agents, path-based access control, and crawl delay settings.</p>
 *
 * <p>Key features:</p>
 * <ul>
 *   <li>Supports multiple user-agent directives with pattern matching</li>
 *   <li>Handles Allow and Disallow rules for path-based access control</li>
 *   <li>Manages crawl delay settings per user agent</li>

 * to prevent hanging on problematic PDF files. It also extracts metadata from the PDF
 * document and includes it in the extraction result.
 *
 * <p>Features:
 * <ul>
 *   <li>Text extraction from PDF pages</li>
 *   <li>Embedded document extraction</li>
 *   <li>Annotation extraction (file attachments)</li>
 *   <li>Metadata extraction</li>

        super.setUp();
        htmlTransformer = new HtmlTransformer();
        htmlTransformer.setName("htmlTransformer");
        Map<String, String> featureMap = newHashMap();
        featureMap.put("http://xml.org/sax/features/namespaces", "false");
        htmlTransformer.setFeatureMap(featureMap);
        Map<String, String> propertyMap = newHashMap();
        htmlTransformer.setPropertyMap(propertyMap);

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        final Map<String, String> featureMap = newHashMap();
        featureMap.put("http://xml.org/sax/features/namespaces", "false");
        final Map<String, String> propertyMap = newHashMap();
        final Map<String, String> childUrlRuleMap = newHashMap();
        childUrlRuleMap.put("//A", "href");