if (bulkResponse.hasFailures()) {
                    throw new IllegalBehaviorStateException(bulkResponse.buildFailureMessage());
                }

                response = client.prepareSearchScroll(scrollId).setScroll(scrollForUpdate).execute()
                        .actionGet(fessConfig.getIndexBulkTimeout());

        final SuggestSettingsBuilder settingsBuilder = SuggestSettings.builder();
        settingsBuilder.addInitialSettings("search_engine.type", fessConfig.getFesenType());
        settingsBuilder.bulkTimeout(fessConfig.getIndexBulkTimeout());
        settingsBuilder.clusterTimeout(fessConfig.getIndexHealthTimeout());
        settingsBuilder.indexTimeout(fessConfig.getIndexIndexTimeout());

     * Get the value for the key 'index.bulk.timeout'. <br>
     * The value is, e.g. 3m <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexBulkTimeout();

    /**
     * Get the value for the key 'index.delete.timeout'. <br>
     * The value is, e.g. 3m <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)