} else {
                docId = null;
            }
            if (StringUtil.isNotBlank(docId)) {
                return searchEngineClient.getDocument(fessConfig.getIndexDocumentUpdateIndex(), builder -> {
                    builder.setQuery(QueryBuilders.termQuery(fessConfig.getIndexFieldDocId(), docId));
                    return true;
                });

     * @param condition the search condition
     * @return an optional containing the document if found
     */
    public OptionalEntity<Map<String, Object>> getDocument(final String index, final SearchCondition<SearchRequestBuilder> condition) {
        return getDocument(index, condition, (response, hit) -> {
            final FessConfig fessConfig = ComponentUtil.getFessConfig();