// role: roleType
        final List<String> roleTypeList = new ArrayList<>();
        stream(config.getPermissions()).of(stream -> stream.forEach(p -> roleTypeList.add(p)));
        defaultDataMap.put(fessConfig.getIndexFieldRole(), roleTypeList);
        // mimetype
        defaultDataMap.put(fessConfig.getIndexFieldMimetype(), mimeType);
        // title
        // content
        // cache
        // digest
        // host