List<String> groupList = new ArrayList<>();
        List<String> roleList = new ArrayList<>();

        // Test the overload that doesn't take depth parameter
        // It should call the depth-tracking version with depth 0
        try {
            authenticator.processParentGroup(null, groupList, roleList, "test-id");
        } catch (Exception e) {
            // Expected due to null user
        }

   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one
   *   <li>eliminating the error-prone caching boilerplate
   *   <li>tracking load {@linkplain #stats statistics}
   * </ul>
   *
   * <p>Among the further improvements that {@code LoadingCache} can provide but this method cannot:
   *
   * <ul>

    //                                                                           Attribute
    //                                                                           =========
    /** Helper for crawling configuration management. */
    @Resource
    protected CrawlingConfigHelper crawlingConfigHelper;

    // ===================================================================================

        createTest("SomeOtherTest5")
        then:
        def result = gradleRunner("test").buildAndFail()
        result.output.contains("total executions: 2") == false
        and: "no jvm system exit tracing provided"
        result.output.contains("""Test jvm exited unexpectedly.
Test jvm system exit trace:""") == false
    }

    def "all tests are rerun when test jvm has crashed"() {
        when:

# CLAUDE.md - Fess Crawler Development Guide

Quick reference for AI assistants working on the Fess Crawler project.

## Project Overview

**Fess Crawler** is a Java-based web crawling framework for enterprise content extraction.

### Essential Info

- **Language**: Java 21+
- **Build**: Maven 3.x
- **License**: Apache 2.0
- **DI**: LastaFlute DI
- **Repo**: https://github.com/codelibs/fess-crawler

### Tech Stack

        try {
            crawlingInfoHelper.store(sessionId, true);
            fail("Should throw FessSystemException");
        } catch (FessSystemException e) {
            assertEquals("No crawling session.", e.getMessage());
            assertTrue(e.getCause() instanceof RuntimeException);
        }
    }

    @Test
    public void test_updateParams() {
        final String sessionId = "update-session";

    assumeFalse(
      socketMode is TlsInstance &&
        socketMode.socketMode == Channel &&
        socketMode.protocol == HTTP_2 &&
        socketMode.tlsExtensionMode == STANDARD,
      "failing for channel and h2",
    )

    if (socketMode is TlsInstance) {
      assumeTrue((socketMode.provider == CONSCRYPT) == platform.isConscrypt())
    }

    val client =
      clientTestRule

owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright...

 * including navigation controls and search/filter parameters.
 *
 * <p>Duplicate hosts allow administrators to define hostname patterns that should
 * be treated as equivalent during crawling, helping to avoid duplicate content
 * from the same logical site accessed via different hostnames.</p>
 */
public class DuplicateHostPager implements Serializable {

    private static final long serialVersionUID = 1L;

        failoverStates.remove(channel.getChannelId());

        // Try to establish a replacement channel
        manager.establishReplacementChannel();
    }

    /**
     * State tracking for channel failover
     */
    public static class FailoverState {

        private final String channelId;
        private final long failureTime;
        private int retryCount;