final QueryBuilder queryBuilder = QueryBuilders.termQuery(fessConfig.getIndexFieldParentId(), id);
        return getDocumentListByQuery(searchEngineClient, queryBuilder, fields);
    }

    protected List<Map<String, Object>> getDocumentListByQuery(final SearchEngineClient searchEngineClient, final QueryBuilder queryBuilder,
            final String[] fields) {

                return docList;
            }
        };
        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(