final List<String> roleTypeList = getRoleTypes(responseData);
        stream(crawlingConfig.getPermissions()).of(stream -> stream.forEach(p -> roleTypeList.add(p)));
        putResultDataBody(dataMap, fessConfig.getIndexFieldRole(), roleTypeList);
        // virtualHosts
        putResultDataBody(dataMap, fessConfig.getIndexFieldVirtualHost(),

        final List<String> roleTypeList = new ArrayList<>();
        stream(crawlingConfig.getPermissions()).of(stream -> stream.forEach(p -> roleTypeList.add(p)));
        putResultDataBody(dataMap, fessConfig.getIndexFieldRole(), roleTypeList);
        // virtualHosts
        putResultDataBody(dataMap, fessConfig.getIndexFieldVirtualHost(),

     * The value is, e.g. role <br>
     * comment: Field name for role in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldRole();

    /**
     * Get the value for the key 'index.field.boost'. <br>
     * The value is, e.g. boost <br>
     * comment: Field name for boost value in the index.