* @throws CrawlerSystemException if an error occurs while creating the {@link XPath} instance.
     */
    public XPath createXPath(final Consumer<XPathFactory> builder) {
        try {
            final XPathFactory factory = XPathFactory.newInstance();
            builder.accept(factory);
            return factory.newXPath();
        } catch (final Exception e) {

     */
    protected String toKatakana(final String inputStr) throws IOException {
        final StringBuilder kanaBuf = new StringBuilder();

        final Reader rd = new StringReader(inputStr);
        try (TokenStream stream = createTokenStream(rd)) {
            if (stream == null) {
                throw new IOException("Invalid tokenizer.");
            }
            stream.reset();

            int offset = 0;

     * @throws CrawlerSystemException if the patterns cannot be loaded.
     */
    @Override
    public List<Pattern> getIncludeUrlPatternList(final String sessionId) {
        try {
            return includeFilterCache.get(sessionId);
        } catch (final ExecutionException e) {
            throw new CrawlerSystemException(e);
        }
    }

    /**

     */
    @Override
    public void expired() {
        if (clientConnectionManager == null) {
            logger.warn("clientConnectionManager is null.");
            return;
        }

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

     */
    @Override
    public void process(final ResponseData responseData) {
        final SitemapsHelper sitemapsHelper = crawlerContainer.getComponent("sitemapsHelper");
        try (final InputStream responseBody = responseData.getResponseBody()) {
            final SitemapSet sitemapSet = sitemapsHelper.parse(responseBody);
            final Set<RequestData> requestDataSet = new LinkedHashSet<>();

    }

    @AfterClass
    public static void afterClass() throws Exception {
        runner.close();
        runner.clean();
    }

    @Before
    public void before() throws Exception {
        try {
            runner.admin().indices().prepareDelete("_all").execute().actionGet();
        } catch (IndexNotFoundException ignore) {

        }
        runner.refresh();

        accessResultDataImpl.setData("hoge.txt".getBytes());
        accessResultDataImpl.setEncoding(Constants.UTF_8);
        accessResultDataImpl.setTransformerName("transformer");

        setBaseDir();

        try {
            final Object obj = fileTransformer.getData(accessResultDataImpl);
            fail();
        } catch (final CrawlerSystemException e) {}
    }

    public void test_getData_nullData() throws Exception {

     * @return true if it matches, false otherwise.
     */
    boolean matches(final String path) {
        if (StringUtil.isBlank(path)) {
            return false;
        }

        try {
            final int pos = path.indexOf('/', 6);
            final URI uri = new URI(pos == -1 ? path : path.substring(0, pos));

        final String encoding = htmlXpathExtractor.getEncoding(bis);
        CloseableUtil.closeQuietly(bis);
        assertEquals("Shift_JIS", encoding);
    }

    public void test_getHtml_null() {
        try {
            htmlXpathExtractor.getText(null, null);
            fail();
        } catch (final CrawlerSystemException e) {
            // NOP
        }
    }

        TestRule rule2 = new TestRule("rule2", false);

        ruleManager.addRule(rule1);

        try {
            ruleManager.addRule(-1, rule2);
            fail("Should throw IndexOutOfBoundsException for negative index");
        } catch (IndexOutOfBoundsException e) {
            // Expected
        }

        try {
            ruleManager.addRule(5, rule2);