return "Unknown";
    }

    /**
     * Gets the instance ID for this Fess instance.
     * Combines scheduler.target.name (if configured), hostname, and PID
     * to ensure uniqueness across multiple JVMs on the same host.
     *
     * @return The instance ID.
     */
    public String getInstanceId() {
        final String targetName = ComponentUtil.getFessConfig().getSchedulerTargetName();