@Override
    public SearchRequestBuilder prepareSearch(final String... indices) {
        final SearchRequestBuilder builder = client.prepareSearch(indices);
        if (searchPreference != null) {
            builder.setPreference(searchPreference);
        }
        return builder;
    }

    /**
     * Prepares a stream search request builder with the given indices.
     *
     * @param indices The indices to search.

        SearchResponse response = option.apply(client.prepareSearch(index)
                .setScroll(scrollForUpdate)
                .setSize(sizeForUpdate)
                .setPreference(Constants.SEARCH_PREFERENCE_LOCAL)).execute().actionGet(fessConfig.getIndexScrollSearchTimeout());

        int count = 0;
        String scrollId = response.getScrollId();
        try {