lock.writeLock().lock();
        try {
            if (children.remove(childName) != null) {
                hasChanges = true;
                lastUpdateTime = System.currentTimeMillis();
            }
        } finally {
            lock.writeLock().unlock();
        }
    }
    
    public List<FileInfo> getChildren() {
        lock.readLock().lock();
        try {

                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    throw new CrawlingAccessException(e);
                }
                return null;
            }
        };
        client.setAccessTimeout(1);
        try {
            client.doGet("http://localhost/");
            fail();

        SUPPORTED_MECHS = new ASN1ObjectIdentifier[] { KRB5_MECH_OID, KRB5_MS_MECH_OID };

        Oid krbNameOid = null;
        Oid krbMechOid = null;
        try {
            krbNameOid = new Oid("1.2.840.113554.1.2.2.1");
            krbMechOid = new Oid("1.2.840.113554.1.2.2");
        } catch (Exception e) {
            log.error("Failed to initialize kerberos OIDs", e);
        }

 * unhealthy.
 *
 * @param source the source used to read bytes from the socket.
 */
internal fun Socket.isHealthy(source: BufferedSource): Boolean =
  try {
    val readTimeout = soTimeout
    try {
      soTimeout = 1
      !source.exhausted()
    } finally {
      soTimeout = readTimeout
    }
  } catch (_: SocketTimeoutException) {
    true // Read timed out; socket is good.

                    if (isQualifiedForInterpolation(field, type)) {
                        boolean isAccessible = field.isAccessible();
                        field.setAccessible(true);
                        try {
                            try {
                                if (String.class == type) {
                                    String value = (String) field.get(target);
                                    if (value != null) {

    }

    @Override
    public synchronized void insert(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {
            reload(updater);
        }
    }

     */
    public static String DEFAULT_OEM_ENCODING = "Cp850";

    static {
        String filename;
        int level;
        FileInputStream in = null;

        log = LogStream.getInstance();

        try {
            filename = System.getProperty("jcifs_smb1.properties");
            if (filename != null && filename.length() > 1) {
                in = new FileInputStream(filename);
            }
            Config.load(in);

                /* If just a timeout, try to disconnect gracefully
                 */
                final boolean hard = !timeout;

                if (!timeout && LogStream.level >= 3) {
                    ex.printStackTrace(log);
                }

                try {
                    disconnect(hard);
                } catch (final IOException ioe) {

    }

    public void test_execute_web() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(7070);
        server.start();

        final String url = "http://localhost:7070/";
        try {
            final int maxCount = 50;
            final int numOfThread = 10;

            final File file = File.createTempFile("crawler-", "");
            file.delete();
            file.mkdirs();

        try {
            final String filename = getDecodeText(bodyPart.getFileName());
            final String mimeType = mimeTypeHelper.getContentType(null, filename);
            if (mimeType != null) {
                final Extractor extractor = extractorFactory.getExtractor(mimeType);
                if (extractor != null) {
                    try (final InputStream in = bodyPart.getInputStream()) {