*/
    public boolean isInfoEnabled() {
        return INFO.equals(logLevel);
    }

    /**
     * Checks if the log level is WARN.
     *
     * @return true if WARN, false otherwise
     */
    public boolean isWarnEnabled() {
        return WARN.equals(logLevel);
    }

    /**
     * Checks if the log level is ERROR.
     * @return true if ERROR, false otherwise.
     */

    public void addExclude(final String urlPattern) {
        try {
            Pattern.compile(urlPattern);
        } catch (final Exception e) {
            if (logger.isWarnEnabled()) {
                logger.warn("Invalid exclude pattern: {}", urlPattern);
            }
            return;
        }
        if (sessionId == null) {
            cachedExcludeSet.add(urlPattern);
        } else {

    /** Indicates an unsupported URL was encountered when crawling started. */
    UNSUPPORTED_URL_AT_CRAWLING_STARTED,
    /** Indicates checking the last modified date of a resource. */
    CHECK_LAST_MODIFIED,
    /** Indicates the resource has not been modified. */
    NOT_MODIFIED,
    /** Indicates getting content from a resource. */
    GET_CONTENT,
    /** Indicates a redirect location was found. */
    REDIRECT_LOCATION,

 * and processing of Sitemap data.
 * </p>
 *
 * <p>
 * The {@code loc} attribute specifies the URL of the Sitemap, while the {@code lastmod} attribute
 * indicates the last time the Sitemap file was modified.  The {@code lastmod} attribute is used by crawlers
 * to incrementally fetch sitemaps that have been updated since a certain date.
 * </p>
 *
 * <p>

                                .collect(Collectors.toList());
                    } catch (final Exception e) {
                        logger.warn("Failed to parse passwords for " + url, e);
                        list = Collections.emptyList();
                    }
                    configPasswordMap.put(value, list);
                }

        final DOMParser parser = getDomParser();
        try (final Reader reader = new StringReader(content)) {
            parser.parse(new InputSource(reader));
        } catch (final Exception e) {
            logger.warn("Failed to parse the content.", e);
            return new ExtractData(extractString(content));
        }

        final Document document = parser.getDocument();
        try {

        if (synonymLoader.getSynonymMap() == null) {
            if (settings.getAsList("synonyms", null) != null) {
                logger.warn("synonyms values are empty.");
            } else if (settings.get("synonyms_path") != null) {
                logger.warn("synonyms_path[{}] is empty.", settings.get("synonyms_path"));
            } else {
                logger.debug("No synonym data.");
            }
        }

     */
    void addRule(int index, Rule rule);

    /**
     * Removes the specified rule from the rule manager.
     *
     * @param rule the rule to be removed
     * @return true if the rule was successfully removed, false otherwise
     */
    boolean removeRule(Rule rule);

    /**
     * Checks if the specified rule exists.
     *
     * @param rule the rule to check for existence

    /*
     * (non-Javadoc)
     *
     * @see org.seasar.extension.timer.TimeoutTarget#expired()
     */
    @Override
    public void expired() {
        if (clientConnectionManager == null) {
            logger.warn("clientConnectionManager is null.");
            return;
        }

        try {
            // Close expired connections
            clientConnectionManager.closeExpiredConnections();

     */
    @Override
    public boolean markSupported() {
        return fileInputStream.markSupported();
    }

    /**
     * Repositions this stream to the position at the time the mark method was last called on this input stream.
     * This method delegates to {@link FileInputStream#reset()}.
     *
     * @throws IOException if an I/O error occurs.
     */
    @Override