*
     * @param key the feature key
     * @param value the feature value
     * @throws CrawlerSystemException if key or value is null
     */
    public void addFeature(final String key, final String value) {
        if (StringUtil.isBlank(key) || StringUtil.isBlank(value)) {
            throw new CrawlerSystemException("key or value is null.");
        }

        featureMap.put(key, value);
    }

    }

    /**
     * Initializes the extractor by starting the office manager.
     *
     * @throws CrawlerSystemException if the office manager is null or fails to start
     */
    @PostConstruct
    public void init() {
        if (officeManager == null) {
            throw new CrawlerSystemException("officeManager is null.");
        }
        try {
            officeManager.start();

        /**
         * Accepts a writer.
         * @param writer A writer.
         * @throws IOException if an I/O error occurs.
         * @throws TikaException if a Tika exception occurs.
         * @throws SAXException if a SAX exception occurs.
         */
        void accept(Writer writer) throws IOException, TikaException, SAXException;
    }

    /**
     * Sets the output encoding.

    }

    /**
     * Test destroyObject without listener
     */
    public void test_destroyObject_noListener() throws Exception {
        TestComponent component = new TestComponent();
        PooledObject<TestComponent> pooledObject = new DefaultPooledObject<>(component);

        // Should not throw exception even without listener
        factory.destroyObject(pooledObject);

/**
 * @author shinsuke
 *
 */
public class FileSystemClientTest extends PlainTestCase {
    public FileSystemClient fsClient;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("mimeTypeHelper", MimeTypeHelperImpl.class)//
                .singleton("fsClient", FileSystemClient.class);

        } catch (final Exception e) {
            throw new SitemapsException("Could not parse XML Sitemaps.", e);
        }
        return handler.getSitemapSet();
    }

    /**
     * Disables external resources for the SAX parser to prevent XXE attacks.
     * @param parser the SAX parser to configure
     * @throws SAXNotRecognizedException if the parser doesn't recognize the feature

     * @return The IndexResponse from OpenSearch.
     * @throws OpenSearchAccessException if the insertion fails.
     * @throws CrawlingAccessException if there's a conflict during insertion.
     */
    protected IndexResponse insert(final Object target, final OpType opType) {
        final String url = getUrl(target);
        if (url == null) {
            throw new OpenSearchAccessException("url is null.");
        }

     * This method extracts the host from the URL and enforces a delay based on the configured
     * delayMillisBeforeProcessing parameter.
     *
     * @throws InterruptedRuntimeException if the thread is interrupted during the delay
     * @throws CrawlerSystemException if an error occurs while processing the URL
     */
    @Override
    protected void delayBeforeProcessing() {

/**
 * @author shinsuke
 *
 */
public class HcHttpClientTest extends PlainTestCase {
    public HcHttpClient httpClient;

    public UrlFilter urlFilter;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("mimeTypeHelper", MimeTypeHelperImpl.class)//
                .singleton("dataHelper", MemoryDataHelper.class)//

     * @param params Additional parameters for the conversion.
     * @return The XContentBuilder with the access result data.
     * @throws IOException if the conversion fails.
     */
    @Override
    public XContentBuilder toXContent(final XContentBuilder builder, final Params params) throws IOException {
        builder.startObject();
        if (transformerName != null) {
            builder.field(TRANSFORMER_NAME, transformerName);