return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
    }

    /**
     * Gets the path to the log file.
     *
     * @return The log file path.
     */
    public String getLogFilePath() {
        final String value = System.getProperty("fess.log.path");
        if (value != null) {
            return value;
        }
        final String userDir = System.getProperty("user.dir");