if (permissions == null) {
            final FessConfig fessConfig = ComponentUtil.getFessConfig();
            final String baseDn = fessConfig.getLdapBaseDn();
            final String accountFilter = fessConfig.getLdapAccountFilter();
            final String groupFilter = fessConfig.getLdapGroupFilter();
            if (StringUtil.isNotBlank(baseDn) && StringUtil.isNotBlank(accountFilter)) {

                StringUtil.isNotBlank(fessConfig.getLdapAdminSecurityCredentials()) ? DUMMY_PASSWORD : StringUtil.EMPTY;
        form.ldapBaseDn = fessConfig.getLdapBaseDn();
        form.ldapAccountFilter = fessConfig.getLdapAccountFilter();
        form.ldapGroupFilter = fessConfig.getLdapGroupFilter();
        form.ldapMemberofAttribute = fessConfig.getLdapMemberofAttribute();
        form.notificationLogin = fessConfig.getNotificationLogin();

    }

    default void setLdapAccountFilter(final String value) {
        setSystemProperty(Constants.LDAP_ACCOUNT_FILTER, value);
    }

    default String getLdapAccountFilter() {
        return getSystemProperty(Constants.LDAP_ACCOUNT_FILTER);
    }

    default void setLdapGroupFilter(final String value) {
        setSystemProperty(Constants.LDAP_GROUP_FILTER, value);
    }