@PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        final Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        cal.set(2027, 3 - 1, 1); // EOL Date
        eolTime = cal.getTimeInMillis();
        if (isEoled()) {

     * That may introduce an extra class for each lambda (currently a dozen).
     */
    Logger local = logger;
    if (local != null) {
      return local;
    }
    synchronized (lock) {
      local = logger;
      if (local != null) {
        return local;
      }
      return logger = Logger.getLogger(loggerName);
    }
  }

    /** Cache for storing user information. */
    protected LoadingCache<String, UserInfo> userInfoCache;

    /** Name of the logger for search logs. */
    protected String loggerName = "fess.log.searchlog";

    /** Logger for search logs. */
    protected Logger searchLogLogger = null;

    /** ObjectMapper for JSON processing. */
    protected ObjectMapper objectMapper = new ObjectMapper();

    /**

                    }
                } else {
                    logger.warn("{} is not available.", generatorName);
                }
            } else if (logger.isDebugEnabled()) {
                logger.debug("No image file exists: {}", noImageFile.getAbsolutePath());
            }
        } catch (final Exception e) {
            logger.warn("Failed to create thumbnail for {}", entity, e);
        }
    }

 * and converting XContent objects to different output formats.
 */
public final class SearchEngineUtil {

    private static final Logger logger = LogManager.getLogger(SearchEngineUtil.class);

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private SearchEngineUtil() {
    }

    /**

 * alternative or supplementary search terms to improve search results.
 */
public class RelatedQueryHelper extends AbstractConfigHelper {
    private static final Logger logger = LogManager.getLogger(RelatedQueryHelper.class);

    /**
     * Map storing related queries organized by virtual host key and search term.

        final RelatedQueryPager pager = copyBeanToNewBean(body, RelatedQueryPager.class);
        final List<RelatedQuery> list = relatedQueryService.getRelatedQueryList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                        .total(pager.getAllRecordCount())

 * <ul>
 *   <li>Retry up to 5 times</li>
 *   <li>Wait 500ms between retries</li>
 * </ul>
 *
 */
public class FaultTolerantClient implements CrawlerClient {

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FaultTolerantClient.class);

    /** The underlying crawler client */
    protected CrawlerClient client;

    /** Maximum number of retry attempts */

import jakarta.annotation.Resource;

/**
 * API action for admin request header management.
 *
 */
public class ApiAdminReqheaderAction extends FessApiAdminAction {

    /** The logger for this class. */
    private static final Logger logger = LogManager.getLogger(ApiAdminReqheaderAction.class);

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

import jakarta.annotation.Resource;

/**
 * API action for admin web authentication management.
 *
 */
public class ApiAdminWebauthAction extends FessApiAdminAction {

    /** The logger for this class. */
    private static final Logger logger = LogManager.getLogger(ApiAdminWebauthAction.class);

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