this.userId = userId;
    }

    /**
     * Gets the creation timestamp.
     *
     * @return the creation timestamp
     */
    public LocalDateTime getCreatedAt() {
        return createdAt;
    }

    /**
     * Sets the creation timestamp.
     *
     * @param createdAt the creation timestamp
     */
    public void setCreatedAt(final LocalDateTime createdAt) {

    }

    @Test
    public void test_login_ecs() {
        activityHelper.useEcsFormat = true;
        activityHelper.login(OptionalThing.empty());
        assertEquals(

    public void test_formatDetails() {
        TestableLogNotificationJob testableJob = new TestableLogNotificationJob();

        long timestamp = 1700000000000L; // fixed timestamp for predictable output
        List<LogNotificationEvent> events = new ArrayList<>();
        events.add(new LogNotificationEvent(timestamp, "ERROR", "org.codelibs.fess.TestClass", "Something went wrong", null));

        String details = testableJob.testFormatDetails(events);

        private final long timestamp;

        private final String level;

        private final String loggerName;

        private final String message;

        private final String throwable;

        /**
         * Constructs a new LogNotificationEvent.
         *
         * @param timestamp the event timestamp in milliseconds
         * @param level the log level name

     * @param timestamp The last modified timestamp of the file.
     * @return A new {@link StopwordsFile} associated with the dictionary manager.
     */
    @Override
    protected DictionaryFile<? extends DictionaryItem> newDictionaryFile(final String id, final String path, final Date timestamp) {
        return new StopwordsFile(id, path, timestamp).manager(dictionaryManager);
    }

     * @param path The path of the dictionary file.
     * @param timestamp The timestamp of the dictionary file.
     * @return A new dictionary file.
     */
    @Override
    protected DictionaryFile<? extends DictionaryItem> newDictionaryFile(final String id, final String path, final Date timestamp) {
        return new KuromojiFile(id, path, timestamp).manager(dictionaryManager);
    }

     * @param timestamp The last modified timestamp of the file.
     * @return A new {@link StemmerOverrideFile} associated with the dictionary manager.
     */
    @Override
    protected DictionaryFile<? extends DictionaryItem> newDictionaryFile(final String id, final String path, final Date timestamp) {
        return new StemmerOverrideFile(id, path, timestamp).manager(dictionaryManager);
    }

    protected String path;

    /** The timestamp when this dictionary file was created or last modified. */
    protected Date timestamp;

    /**
     * Creates a new DictionaryFile with the specified parameters.
     *
     * @param id the unique identifier for this dictionary file
     * @param path the file path of this dictionary
     * @param timestamp the timestamp of the dictionary file
     */

     *
     * @return the item size
     */
    public long getSize() {
        return size;
    }

    /**
     * Returns the last modified timestamp.
     *
     * @return the last modified timestamp
     */
    public ZonedDateTime getLastModified() {
        return lastModified;
    }

    /**
     * Returns the base64-encoded ID of the item.
     *

    /**
     * Gets the message timestamp.
     *
     * @return the message timestamp
     */
    public LocalDateTime getTimestamp() {
        return timestamp;
    }

    /**
     * Sets the message timestamp.
     *
     * @param timestamp the message timestamp
     */
    public void setTimestamp(final LocalDateTime timestamp) {
        this.timestamp = timestamp;
    }

    /**