}
        }
    }

    /**
     * Extracts text from an embedded file using the appropriate extractor.
     * @param filename the filename of the embedded file
     * @param embeddedFile the embedded file to extract text from
     * @param writer the writer to append extracted text to
     */

     */
    public LhaExtractor() {
        super();
    }

    /**
     * Extracts text content from an LHA archive input stream.
     *
     * @param in the input stream containing the LHA archive
     * @param params extraction parameters
     * @return the extracted text data
     * @throws CrawlerSystemException if the input stream is null

    /**
     * Constructs a new ExtractData with the specified content.
     *
     * @param content the content to set
     */
    public ExtractData(final String content) {
        this.content = content;
    }

    /**
     * Puts multiple values for a given key in the metadata.
     *
     * @param key the metadata key
     * @param values the values to associate with the key
     */

     * Constructs a new FilenameExtractor.
     */
    public FilenameExtractor() {
        // Default constructor
    }

    /**
     * Extracts the filename from the parameters.
     * @param in The input stream (not used).
     * @param params The parameters, expected to contain ExtractData.RESOURCE_NAME_KEY.
     * @return An ExtractData object containing the filename as content.
     */
    @Override

    /**
     * Creates a new MsVisioExtractor instance.
     */
    public MsVisioExtractor() {
        super();
    }

    /**
     * Extracts text from the Visio input stream.
     * @param in The input stream.
     * @param params The parameters.
     * @return The extracted data.
     */
    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {

    }

    /**
     * Stores a single child URL to the crawling queue.
     * @param childUrl The child URL to store.
     * @param parentUrl The parent URL.
     * @param weight The weight of the child URL.
     * @param depth The depth of the child URL.
     */
    protected void storeChildUrl(final String childUrl, final String parentUrl, final float weight, final int depth) {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new exception with the specified detail message and cause.
     *
     * @param message the detail message
     * @param cause the cause (which is saved for later retrieval by the {@link Throwable#getCause()} method)
     */
    public ExecutionTimeoutException(final String message, final Throwable cause) {

     * @param message the detail message
     * @param cause the cause of the exception
     */
    public SitemapsException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new SitemapsException with the specified detail message.
     * @param message the detail message
     */

    /**
     * Constructs a new SuggestIndexException with the specified detail message.
     * @param msg The detail message.
     */
    public SuggestIndexException(final String msg) {
        super(msg);
    }

    /**
     * Constructs a new SuggestIndexException with the specified cause.
     * @param cause The cause.
     */
    public SuggestIndexException(final Throwable cause) {
        super(cause);
    }

     * Registers a callback to be executed when the computation is complete.
     * @param consumer The callback.
     * @return The promise.
     */
    public Promise then(final Consumer<RESPONSE> consumer) {
        return promise.then(consumer);
    }

    /**
     * Registers a callback to be executed when the computation fails.
     * @param consumer The callback.
     * @return The promise.
     */