*/
abstract class EventListener {
  /**
   * Invoked as soon as a call is enqueued or executed by a client. In case of thread or stream
   * limits, this call may be executed well before processing the request is able to begin.
   *
   * This will be invoked only once for a single [Call]. Retries of different routes or redirects

     * @param includeContent whether to include the actual content in the response
     * @return the response data for the request
     * @throws CrawlingAccessException if an error occurs while processing the request
     */
    protected ResponseData processRequest(final String uri, final boolean includeContent) {
        if (!isInit) {
            init();
        }

        // start

    /** 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();

    /**
     * Initializes the SearchLogHelper.
     */
    @PostConstruct
    public void init() {

    to use `Lock` and `Condition` instead of `synchronized` for best resource utilization.

 *  New: Switch our Internationalized Domain Name (IDN) implementation to [UTS #46 Nontransitional
    Processing][uts46]. With this fix, the `ß` code point no longer maps to `ss`. OkHttp now embeds
    its own IDN mapping table in the library.

 *  New: Prefer the client's configured precedence order for TLS cipher suites. (OkHttp used to

    public static final String TIME_TO_LIVE_PROPERTY = "timeToLive";

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

    /** Helper for processing robots.txt files */
    @Resource
    protected RobotsTxtHelper robotsTxtHelper;

    /** Helper for managing content length limits */
    @Resource
    protected ContentLengthHelper contentLengthHelper;

   *
   * <p>Usage example:
   *
   * {@snippet :
   * ListenableFuture<Integer> fetchCounterFuture = ...;
   *
   * // Falling back to a zero counter in case an exception happens when
   * // processing the RPC to fetch counters.
   * ListenableFuture<Integer> faultTolerantFuture = Futures.catching(
   *     fetchCounterFuture, FetchException.class, x -> 0, directExecutor());
   * }
   *

    @Resource
    private ScheduledJobService scheduledJobService;
    /** Pager for paginating scheduled job results */
    @Resource
    private SchedulerPager schedulerPager;
    /** Helper for processing scheduled jobs. */
    @Resource
    protected ProcessHelper processHelper;

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

            });
        });
    }

    /**
     * Handles the upload of synonym dictionary files.
     *
     * @param form the upload form containing the file to upload
     * @return HTML response after processing the upload
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final UploadForm form) {
        validate(form, messages -> {}, () -> uploadpage(form.dictId));

     * @param includeContent whether to include the actual content in the response
     * @return the response data for the request
     * @throws CrawlingAccessException if an error occurs while processing the request
     */
    protected ResponseData processRequest(final String uri, final boolean includeContent) {
        if (!isInit) {
            init();
        }

        // start

     *
     * @param buffer the buffer containing the response
     * @param start the starting position in the buffer
     * @param len the length of the response
     * @throws SMBProtocolDecodingException if processing fails
     */
    protected void haveResponse(final byte[] buffer, final int start, final int len) throws SMBProtocolDecodingException {
    }

    /**
     * Read error response from buffer
     *