protected long delayMillisAfterProcessing = 0L;

    /** Delay in milliseconds when no URL is in the queue */
    protected long delayMillisAtNoUrlInQueue = 500L;

    /** Delay in milliseconds before processing a URL */
    protected long delayMillisBeforeProcessing = 0L;

    /** Delay in milliseconds for waiting for new URLs */
    protected long delayMillisForWaitingNewUrl = 1000L;

    protected IDTYPE id;

    /** The session ID associated with this URL queue. */
    protected String sessionId;

    /** The HTTP method used for the URL in the queue. */
    protected String method;

    /** The URL from the queue. */
    protected String url;

    /** The metadata associated with the URL queue. */
    protected String metaData;

    protected static final Pattern ALLOW_RECORD = Pattern.compile("^allow:\\s*([^\\s]*)\\s*$", Pattern.CASE_INSENSITIVE);

    /** Pattern for parsing crawl-delay records. */
    protected static final Pattern CRAWL_DELAY_RECORD = Pattern.compile("^crawl-delay:\\s*([^\\s]+)\\s*$", Pattern.CASE_INSENSITIVE);

    /**
     * Pattern for Sitemap record.
     */

    /** The name of the transformer. */
    protected String transformerName;

    /** The data of the result. */
    protected byte[] data;

    /** The encoding of the result. */
    protected String encoding;

    /** The set of the child URLs. */
    protected Set<RequestData> childUrlSet = new LinkedHashSet<>();

    /** The raw data. */
    protected Object rawData = null;

    /** The serializer. */

 * }
 * </pre>
 *
 */
public class IdnDnsResolver implements DnsResolver {

    /** Flag for IDN conversion. */
    protected int flag = 0;

    /** Encoding for URL decoding. */
    protected String encoding = "UTF-8";

    /**
     * Creates a new IdnDnsResolver instance with default settings.
     */
    public IdnDnsResolver() {
        super();
    }

    private static final long serialVersionUID = 1L;

    /** The rule ID. */
    protected String ruleId;

    /** The response processor. */
    protected ResponseProcessor responseProcessor;

    /** The crawler container. */
    @Resource
    protected transient CrawlerContainer crawlerContainer;

    /**
     * Constructs a new AbstractRule.
     */
    public AbstractRule() {

    /** The resource name for the MIME types configuration file. */
    protected static final String MIME_TYPES_RESOURCE_NAME = "/org/codelibs/fess/crawler/mime/tika-mimetypes.xml";

    /** The MimeTypes instance for detecting MIME types. */
    protected MimeTypes mimeTypes;

    /** Whether to use the filename for MIME type detection. */
    protected boolean useFilename = false;

 */
public class EncodingHelper {

    /** The default encoding to use when no mapping is found */
    protected String defaultEncoding;

    /** Map of encoding names to their preferred forms */
    protected Map<String, String> encodingMap = new HashMap<>();

    /**
     * Constructs a new EncodingHelper.
     */
    public EncodingHelper() {

 * @param <Res> the type of the response
 */
public abstract class RequestBuilder<Req extends Request<Res>, Res extends Response> {
    /** The OpenSearch client. */
    protected Client client;
    /** The request being built. */
    protected Req request;

    /**
     * Constructor for RequestBuilder.
     * @param client The OpenSearch client.
     * @param request The request instance.
     */

                deferred.reject(e);
            }
        });
    }

    @Override
    protected String getValidationError() {
        return null;
    }

    /**
     * Builds the OpenSearch query for popular words.
     * @return The QueryBuilder instance.
     */
    protected QueryBuilder buildQuery() {
        final BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();