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

    /**

        assertTrue(result);

        // Verify deletion
        client.admin().indices().prepareRefresh(TEST_INDEX).execute().actionGet();
        long count = client.prepareSearch(TEST_INDEX)
                .setQuery(QueryBuilders.termQuery("field", "value1"))
                .execute()
                .actionGet()
                .getHits()
                .getTotalHits()

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

    /**
     * Prepares a stream search request builder for specific indices.
     *
     * @param indices the indices to search

    public static boolean deleteByQuery(final Client client, final SuggestSettings settings, final String index,
            final QueryBuilder queryBuilder) {
        try {
            SearchResponse response = client.prepareSearch(index)
                    .setQuery(queryBuilder)
                    .setSize(500)
                    .setScroll(settings.getScrollTimeout())
                    .execute()