*/
    public void test_init_withEmptySessionId() {
        urlFilter.init("");
        // Should handle empty session ID gracefully
        assertNotNull(urlFilter);
    }

    /**
     * Test adding a single include pattern
     */
    public void test_addInclude_singlePattern() {
        String sessionId = "test-session-002";
        urlFilter.init(sessionId);

        urlFilter.addInclude("https://example.com/.*");

     */
    public void test_name_boundaryCases() {
        // Single character
        testTransformer.setName("a");
        assertEquals("a", testTransformer.getName());

        // Single space
        testTransformer.setName(" ");
        assertEquals(" ", testTransformer.getName());

        // Single Unicode character
        testTransformer.setName("あ");

     */
    protected String getResultDataHeader() {
        // TODO: Support other XML header types
        return "<?xml version=\"1.0\"?>\n<doc>\n";
    }

    /**
     * Returns the result data body for a single value.
     * @param name The name of the field.
     * @param value The value of the field.
     * @return The result data body.
     */
    protected String getResultDataBody(final String name, final String value) {

        } catch (final Exception e) {
            throw new OpenSearchAccessException("Failed to refresh.", e);
        }
    }

    /**
     * Inserts a single document into the OpenSearch index.
     *
     * @param target The object to insert.
     * @param opType The operation type (CREATE, INDEX, etc.).
     * @return The IndexResponse from OpenSearch.

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        ruleManager = new TestRuleManager();
    }

    /**
     * Test adding a single rule
     */
    public void test_addRule_single() {
        TestRule rule = new TestRule("rule1", true);

        ruleManager.addRule(rule);

        assertTrue(ruleManager.hasRule(rule));

     */
    protected String getResultDataHeader() {
        // TODO support other type
        return "<?xml version=\"1.0\"?>\n<doc>\n";
    }

    /**
     * Returns the body of the result data for a single value.
     * @param name The name of the field.
     * @param value The value of the field.
     * @return The result data body.
     */
    protected String getResultDataBody(final String name, final String value) {

                    return uq;
                })
                .collect(Collectors.toList());
        urlQueueService.offerAll(crawlerContext.sessionId, childList);
    }

    /**
     * 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.