final AcknowledgedResponse response = indicesClient.prepareAliases().addAlias(indexName, aliasName, source).execute()
                        .actionGet(fessConfig.getIndexIndicesTimeout());
                if (response.isAcknowledged()) {
                    logger.info("Created {} alias for {}", aliasName, indexName);
                    return true;
                }

                                .actionGet(fessConfig.getIndexIndicesTimeout());
                        final GetIndexResponse response =
                                client.admin().indices().prepareGetIndex().addIndices(fessConfig.getIndexDocumentUpdateIndex()).execute()
                                        .actionGet(fessConfig.getIndexIndicesTimeout());
                        final String[] indices = response.indices();

        settingsBuilder.clusterTimeout(fessConfig.getIndexHealthTimeout());
        settingsBuilder.indexTimeout(fessConfig.getIndexIndexTimeout());
        settingsBuilder.indicesTimeout(fessConfig.getIndexIndicesTimeout());
        settingsBuilder.searchTimeout(fessConfig.getIndexSearchTimeout());
        suggester = Suggester.builder().settings(settingsBuilder).build(searchEngineClient, fessConfig.getIndexDocumentSuggestIndex());

     * The value is, e.g. 1m <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexIndicesTimeout();

    /**
     * Get the value for the key 'index.filetype'. <br>
     * The value is, e.g. text/html=html<br>
     * application/msword=word<br>