.orElse(false);
    }

    /**
     * Masks email addresses in the input string for privacy protection.
     *
     * @param value the string that may contain email addresses
     * @return string with email addresses replaced by masked pattern
     */
    public static String maskEmail(final String value) {
        if (value == null) {

     * Search logs from these bots will be automatically removed.
     */
    @Size(max = 10000)
    public String purgeByBots;

    /**
     * Email addresses to receive system notifications.
     * Multiple addresses can be specified, separated by commas.
     */
    @Size(max = 1000)
    public String notificationTo;

    /**
     * Enable or disable search suggestions based on search logs.