# Field name for file name in the index.
index.field.filename=filename
# Field name for thumbnail in the index.
index.field.thumbnail=thumbnail
# Field name for virtual host in the index.
index.field.virtual_host=virtual_host
# Field name for content title in the response.
response.field.content_title=content_title
# Field name for content description in the response.
response.field.content_description=content_description

    /** The key of the configuration. e.g. thumbnail */
    String INDEX_FIELD_THUMBNAIL = "index.field.thumbnail";

    /** The key of the configuration. e.g. virtual_host */
    String INDEX_FIELD_virtual_host = "index.field.virtual_host";

    /** The key of the configuration. e.g. content_title */
    String RESPONSE_FIELD_content_title = "response.field.content_title";

        stream(crawlingConfig.getPermissions()).of(stream -> stream.forEach(p -> roleTypeList.add(p)));
        putResultDataBody(dataMap, fessConfig.getIndexFieldRole(), roleTypeList);
        // virtualHosts
        putResultDataBody(dataMap, fessConfig.getIndexFieldVirtualHost(),
                stream(crawlingConfig.getVirtualHosts()).get(stream -> stream.filter(StringUtil::isNotBlank).collect(Collectors.toList())));