final String key = fessConfig.getSystemProperty("saml.attribute.group.name", "memberOf");
        if (StringUtil.isNotBlank(key)) {
            final List<String> nameList = attributes.get(key);
            if (nameList != null) {
                list.addAll(nameList);
            }
        }
        final String value = fessConfig.getSystemProperty("saml.default.groups");
        if (StringUtil.isNotBlank(value)) {