return;
        }

        final Supplier<Hashtable<String, String>> adminEnv = this::createAdminEnv;
        final String userDN = fessConfig.getLdapAdminUserSecurityPrincipal(user.getName());
        // attributes
        search(fessConfig.getLdapAdminUserBaseDn(), fessConfig.getLdapAdminUserFilter(user.getName()), null, adminEnv, result -> {
            if (!result.isEmpty()) {

    default String getLdapAdminUserFilter(final String name) {
        return String.format(getLdapAdminUserFilter(), name);
    }

    String getLdapAdminUserBaseDn();

    default String getLdapAdminUserSecurityPrincipal(final String name) {
        final StringBuilder buf = new StringBuilder(100);
        buf.append(String.format(getLdapAdminUserFilter(), name));
        if (StringUtil.isNotBlank(getLdapAdminUserBaseDn())) {