import org.apache.logging.log4j.Logger;
import org.codelibs.fess.util.ComponentUtil;

/**
 * Job for purging expired thumbnail files from the system.
 * This job removes thumbnail files that have exceeded their configured expiration time
 * to prevent disk space from being consumed by old thumbnails.
 */
public class PurgeThumbnailJob {
    /** Logger instance for this class */

        if (e.isDebugEnabled()) {
            logger.debug("Crawling Access Exception at {}", urlQueue.getUrl(), e);
        } else if (e.isInfoEnabled()) {
            logger.info(e.getMessage());
        } else if (e.isWarnEnabled()) {
            logger.warn("Crawling Access Exception at " + urlQueue.getUrl(), e);
        } else if (e.isErrorEnabled()) {
            logger.error("Crawling Access Exception at " + urlQueue.getUrl(), e);

public class ActivityHelper {

    /**
     * Default constructor.
     */
    public ActivityHelper() {
        // Default constructor
    }

    /**
     * The logger.
     */
    protected Logger logger = null;

    /**
     * The logger name.
     */
    protected String loggerName = "fess.log.audit";

    /**
     * The permission separator.
     */
    protected String permissionSeparator = "|";

## Dependencies for a group of *path operations* { #dependencies-for-a-group-of-path-operations }

Later, when reading about how to structure bigger applications ([Bigger Applications - Multiple Files](../../tutorial/bigger-applications.md){.internal-link target=_blank}), possibly with multiple files, you will learn how to declare a single `dependencies` parameter for a group of *path operations*.

                            if (logger.isTraceEnabled()) {
                                logger.trace(msg);
                            } else if (logger.isDebugEnabled()) {
                                logger.debug(msg);
                            } else if (logger.isWarnEnabled()) {
                                logger.warn(msg);
                            } else if (logger.isErrorEnabled()) {

 * It defines the basic structure and configuration options for crawler clients.
 */
public abstract class AbstractCrawlerClient implements CrawlerClient {

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

    /** The MIME type for application/octet-stream. */
    protected static final String APPLICATION_OCTET_STREAM = "application/octet-stream";

 * This allows for different SMB shares to use different authentication credentials.</p>
 */
public class SmbAuthenticationHolder {
    private static final Logger logger = LogManager.getLogger(SmbAuthenticationHolder.class);

    /** Map of path prefixes to SMB authentication configurations. */
    private final Map<String, SmbAuthentication> authMap = new HashMap<>();

    /**

			if !openidInit {
				logger.Info("Waiting for OpenID to be initialized.. (retrying in %s)", retryInterval)
			}
			if !ldapInit {
				logger.Info("Waiting for LDAP to be initialized.. (retrying in %s)", retryInterval)
			}
			if !authNInit {
				logger.Info("Waiting for AuthN to be initialized.. (retrying in %s)", retryInterval)
			}
			if !authZInit {

        validateApi(body, messages -> {});
        final JobLogPager pager = copyBeanToNewBean(body, JobLogPager.class);
        final List<JobLog> list = jobLogService.getJobLogList(pager);
        return asJson(new ApiResult.ApiLogsResponse<EditBody>().logs(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                .total(pager.getAllRecordCount())
                .status(ApiResult.Status.OK)

public class CrawlingInfoHelper {

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

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

    /**
     * Key used for facet count aggregations.
     */
    public static final String FACET_COUNT_KEY = "count";

    /**