bulkRequestBuilder = client.prepareBulk();
        }
        final String index = fessConfig.getIndexDocumentUpdateIndex();
        for (final String id : ids) {
            bulkRequestBuilder.add(client.prepareUpdate()
                    .setIndex(index)
                    .setId(id)
                    .setScript(new Script(ScriptType.INLINE, scriptLang, scriptCode, params)));
        }

    public UpdateRequestBuilder prepareUpdate() {
        return client.prepareUpdate();
    }

    /**
     * Prepares an update request builder for a specific document.
     *
     * @param index the index name
     * @param id    the document ID
     * @return the update request builder
     */
    @Override
    public UpdateRequestBuilder prepareUpdate(final String index, final String id) {

        try {
            final FessConfig fessConfig = ComponentUtil.getFessConfig();
            final UpdateRequestBuilder builder =
                    ComponentUtil.getSearchEngineClient().prepareUpdate().setIndex(fessConfig.getIndexDocumentUpdateIndex()).setId(id);
            builderLambda.accept(builder);
            final UpdateResponse response = builder.execute().actionGet(fessConfig.getIndexIndexTimeout());