.setDoc(key, value)
                    .setRetryOnConflict(5)
                    .execute()
                    .actionGet(getIndexTimeout());
            client.admin().indices().prepareRefresh().setIndices(settingsIndexName).execute().actionGet(getIndicesTimeout());
        } catch (final Exception e) {
            throw new SuggestSettingsException("Failed to update suggestSettings.", e);
        }
    }

                    .setDocAsUpsert(true)
                    .setDoc(builder)
                    .execute()
                    .actionGet(settings.getIndexTimeout());
            client.admin().indices().prepareRefresh().setIndices(actualIndex).execute().actionGet(settings.getIndicesTimeout());
        } catch (final Exception e) {
            throw new SuggestSettingsException("Failed to add to array.", e);
        }
    }

                        .endObject()
                        .endObject())
                .execute()
                .actionGet();

        client.admin().indices().prepareRefresh(SUGGEST_INDEX).execute().actionGet();
    }

    @Test
    public void testConstructor() {
        // Test constructor initialization

        client.admin().indices().prepareRefresh(TEST_INDEX).execute().actionGet();

        // Delete by query
        boolean result = SuggestUtil.deleteByQuery(client, settings, TEST_INDEX, QueryBuilders.termQuery("field", "value1"));
        assertTrue(result);

        // Verify deletion
        client.admin().indices().prepareRefresh(TEST_INDEX).execute().actionGet();

     */
    public RefreshResponse refresh() {
        if (logger.isDebugEnabled()) {
            logger.debug("Refreshing indices: index={}", index);
        }
        return client.admin().indices().prepareRefresh().execute().actionGet(suggestSettings.getIndexTimeout());
    }

    /**
     * Shuts down the thread pool.
     */
    public void shutdown() {
        if (logger.isInfoEnabled()) {

                        numberOfSuggestDocs += res.getNumberOfSuggestDocs();
                        numberOfInputDocs += res.getNumberOfInputDocs();
                        client.admin().indices().prepareRefresh(index).execute().actionGet(settings.getIndicesTimeout());
                        docs.clear();

                        waitController.run();
                    }
                }

    //                                                                              ======
    public RefreshResponse refresh() {
        return client.admin().indices().prepareRefresh(asEsIndex()).execute().actionGet(refreshTimeout);
    }

    // ===================================================================================

                final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
                final String index = fessConfig.getIndexDocumentUpdateIndex();
                searchEngineClient.admin().indices().prepareRefresh(index).execute().actionGet();
                final long numOfDeleted = searchEngineClient.deleteByQuery(index, queryBuilder);
                logger.info("[{}] Deleted {} stale documents.", dataConfig.getName(), numOfDeleted);

    //                                                                              ======
    public RefreshResponse refresh() {
        return client.admin().indices().prepareRefresh(asEsIndex()).execute().actionGet(refreshTimeout);
    }

    // ===================================================================================

                    scrollId = response.getScrollId();
                }
            } finally {
                SuggestUtil.deleteScrollContext(client, scrollId);
            }
            client.admin().indices().prepareRefresh(index).execute().actionGet(settings.getIndicesTimeout());
        } catch (final Exception e) {
            throw new SuggesterException("Failed to exec delete by query.", e);
        }

        return true;