* <li>hourly</li>
     * <li>daily</li>
     * <li>weekly</li>
     * <li>monthly</li>
     * <li>yearly</li>
     * <li>never</li>
     * </ul>
     * The value "always" should be used to describe documents that change each
     * time they are accessed. The value "never" should be used to describe
     * archived URLs.
     *
     * Please note that the value of this tag is considered a hint and not a

     *  XPath namespace prefixes are resolved from the contextNode.
     *
     *  @param contextNode The node to start searching from.
     *  @param expression A valid XPath string.
     *  @return A XPathNodes, should never be null.
     *
     * @throws XPathExpressionException if an XPath expression error occurs.
     */
    public XPathNodes selectNodeList(final Node contextNode, final String expression) throws XPathExpressionException {

    }

    /**
     * Test very long URL handling
     */
    public void test_veryLongUrl() {
        String sessionId = "test-session-020";
        urlFilter.init(sessionId);

        // Create a very long URL
        StringBuilder longUrl = new StringBuilder("https://example.com/");
        for (int i = 0; i < 1000; i++) {
            longUrl.append("very/long/path/segment/");
        }

        assertNull(exception.getCause());
    }

    /**
     * Test constructor with very long message
     */
    public void test_constructor_withVeryLongMessage() {
        StringBuilder longMessage = new StringBuilder();
        for (int i = 0; i < 10000; i++) {
            longMessage.append("Very long error message ");
        }
        String message = longMessage.toString();

     * crawler may only retrieve Sitemaps that were modified since a certain
     * date. This incremental Sitemap fetching mechanism allows for the rapid
     * discovery of new URLs on very large sites.
     */
    private String lastmod;

    /**
     * Creates a new SitemapFile instance.
     */
    public SitemapFile() {
        // Default constructor
    }

    /*

        assertNotNull(matchedRule);
        assertEquals("rule2", matchedRule.getRuleId());
    }

    /**
     * Test edge cases for rule ID
     */
    public void test_ruleId_edgeCases() {
        // Very long rule ID
        StringBuilder longId = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longId.append("verylongruleid");
        }
        testRule.setRuleId(longId.toString());

        // Test with mixed characters
        testTransformer.setName("Transformer-変換器-123");
        assertEquals("Transformer-変換器-123", testTransformer.getName());
    }

    /**
     * Test name with very long string
     */
    public void test_name_veryLongString() {
        StringBuilder longName = new StringBuilder();
        for (int i = 0; i < 10000; i++) {
            longName.append("verylongname");
        }

        assertEquals(2, executionOrder.size());
        assertEquals("match_true", executionOrder.get(0));
        assertEquals("processor_executed", executionOrder.get(1));
    }

    /**
     * Test rule with very long rule ID
     */
    public void test_veryLongRuleId() {
        StringBuilder longId = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longId.append("verylongruleid_");
        }