import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.opensearch.user.exentity.User;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin user management.
 */
public class ApiAdminUserAction extends FessApiAdminAction {

    /** The logger for this class. */

- **Per-context configuration**: No global state, each context encapsulates configuration
- **Authentication**: NTLM, Kerberos, SPNEGO unified subsystem
- **SLF4J Logging**: Comprehensive logging throughout the codebase
- **Resource Management**: AutoCloseable patterns for file handles and connections
- **Thread Safety**: Components support concurrent access
- **DFS Support**: Distributed File System resolution

    //                                                                           =========
    @Resource
    private UserService userService;
    @Resource
    private RoleService roleService;
    @Resource
    private GroupService groupService;
    @Resource
    private UserPager userPager;

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

            handleNodeAvailable(notification);
            break;
    }
}

private void handleResourceChange(WitnessNotification notification) {
    // Resource state changed - may need to reconnect
    log.info("Resource change detected for: {}", notification.getResourceName());
    
    // Schedule reconnection attempt
    scheduleReconnection(1000);  // 1 second delay
}

    /**
     * Creates a directory entry enumeration iterator.
     *
     * @param th the SMB tree handle for the connection
     * @param parent the parent resource being enumerated
     * @param wildcard the wildcard pattern for filtering entries
     * @param filter additional resource name filter to apply
     * @param searchAttributes the file attributes to search for
     * @throws CIFSException if an error occurs during initialization
     */

        assertNotNull(r1, "First adapted resource must not be null");
        // For workgroup/server entries, names end with '/'
        assertTrue(r1.getName().endsWith("/"), "Name should end with '/'");

        assertTrue(itr.hasNext(), "Should have second element ready");
        SmbResource r2 = itr.next();
        assertNotNull(r2, "Second adapted resource must not be null");

- **DI**: LastaFlute container with `@Resource` and XML config

### Core Principles

**Thread Safety**: `AtomicLong` for counters, `volatile` for status flags, synchronized blocks, thread-local storage via `CrawlingParameterUtil`

    //                                                                           =========
    @Resource
    private CrawlingInfoService crawlingInfoService;
    @Resource
    private CrawlingInfoPager crawlingInfoPager;
    /** The process helper. */
    @Resource
    protected ProcessHelper processHelper;

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

        if (!problem.getModelId().equals(projectId)) {
            buffer.append(problem.getModelId());

            if (!problem.getSource().isEmpty()) {
                if (!buffer.isEmpty()) {
                    buffer.append(", ");
                }
                buffer.append(problem.getSource());
            }
        }

        if (problem.getLineNumber() > 0) {
            if (!buffer.isEmpty()) {

    //                                                                           =========
    @Resource
    private CrawlingInfoService crawlingInfoService;

    /** Helper for managing crawling processes and session information */
    @Resource
    protected ProcessHelper processHelper;

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