*
     * @param indices The indices to search.
     * @return The stream search request builder.
     */
    @Override
    public SearchRequestBuilder prepareStreamSearch(final String... indices) {
        if (searchPreference != null) {
            return client.prepareSearch(indices).setPreference(searchPreference);
        }
        return client.prepareSearch(indices);
    }

     *
     * @param indices the indices to search
     * @return the search request builder
     */
    @Override
    public SearchRequestBuilder prepareStreamSearch(final String... indices) {
        return client.prepareStreamSearch(indices);
    }

    /**
     * Executes a search scroll request asynchronously.
     *
     * @param request the search scroll request