}

    private int purge(final LocalDateTime time) {
        final SuggestHelper suggestHelper = ComponentUtil.getSuggestHelper();

        try {
            suggestHelper.purgeDocumentSuggest(time);
            final long cleanupDay = ComponentUtil.getFessConfig().getPurgeSuggestSearchLogDay();
            if (cleanupDay > 0) {
                suggestHelper.purgeSearchlogSuggest(time.minusDays(cleanupDay));

        }).error(t -> error.accept(t));
    }

    /**
     * Purges old suggest data from documents.
     *
     * @param time The timestamp to purge data before.
     */
    public void purgeDocumentSuggest(final LocalDateTime time) {
        final BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
        boolQueryBuilder