final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.getDocument(fessConfig.getIndexDocumentUpdateIndex(), builder -> {
            builder.setQuery(QueryBuilders.idsQuery().addIds(id));
            builder.setFetchSource(fields, null);
            return true;
        }).orElse(null);
    }

        };
        ComponentUtil.register(client, "searchEngineClient");

        final List<Map<String, Object>> documents =
                indexingHelper.getDocumentListByQuery(client, QueryBuilders.idsQuery().addIds("001"), new String[] { "title", "content" });
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final UpdateByQueryRequest request = new UpdateByQueryRequest(index).setQuery(QueryBuilders.idsQuery().addIds(id))
                .setScript(new Script(ScriptType.INLINE, "painless",
                        "ctx._source[params.f]=params.v;" + ComponentUtil.getLanguageHelper().getReindexScriptSource(),