regQ(queryBuilder);
    }

    public void queryString(String queryString) {
        checkEsInvalidQuery("queryString", queryString);
        doQueryString(queryString, null);
    }

    public void queryString(String queryString, ConditionOptionCall<QueryStringQueryBuilder> opLambda) {
        checkEsInvalidQuery("queryString", queryString);
        assertObjectNotNull("opLambda", opLambda);

        regQ(queryBuilder);
    }

    public void queryString(String queryString) {
        checkEsInvalidQuery("queryString", queryString);
        doQueryString(queryString, null);
    }

    public void queryString(String queryString, ConditionOptionCall<QueryStringQueryBuilder> opLambda) {
        checkEsInvalidQuery("queryString", queryString);
        assertObjectNotNull("opLambda", opLambda);

        regQ(queryBuilder);
    }

    public void queryString(String queryString) {
        checkEsInvalidQuery("queryString", queryString);
        doQueryString(queryString, null);
    }

    public void queryString(String queryString, ConditionOptionCall<QueryStringQueryBuilder> opLambda) {
        checkEsInvalidQuery("queryString", queryString);
        assertObjectNotNull("opLambda", opLambda);

        final String urlField = fessConfig.getIndexFieldUrl();
        final String queryString = "*" + text + "*";
        context.addFieldLog(urlField, queryString);
        context.addHighlightedQuery(text);
        return QueryBuilders.wildcardQuery(urlField, queryString).boost(boost);
    }

        final String queryString = queryLog.getQueryString();
        final String filterQueryString = queryLog.getFilterQueryString();

        final List<String> tagList = new ArrayList<>();
        for (final String tagFieldName : tagFieldNames) {
            tagList.addAll(Arrays.asList(SuggestUtil.parseQuery(queryString, tagFieldName)));
            if (filterQueryString != null) {

    }

    protected static void deleteDocuments(final String queryString) {
        List<String> docIds = new ArrayList<>();
        Response response = given().contentType("application/json").param("scroll", "1m").param("q", queryString)
                .get(getEsUrl() + "/" + DOC_INDEX_NAME + "/_search");
        JsonPath jsonPath = JsonPath.from(response.asString());

        return new SuggestDeleteResponse(result.getFailures(), System.currentTimeMillis() - start);
    }

    public SuggestDeleteResponse deleteByQuery(final String queryString) {
        return deleteByQuery(QueryBuilders.queryStringQuery(queryString).defaultOperator(Operator.AND));
    }

    public SuggestDeleteResponse deleteByQuery(final QueryBuilder queryBuilder) {
        final long start = System.currentTimeMillis();

                }
                queryBuilder = boolQueryBuilder;
            }

            return queryBuilder;
        } catch (final IOException e) {
            throw new SuggesterException("Failed to create queryString.", e);
        }
    }

    protected QueryBuilder buildFilterQuery(final String fieldName, final List<String> words) {
        final BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery().minimumShouldMatch(1);

// must be extracted from the header.
var userMetadataKeyPrefixes = []string{
	"x-amz-meta-",
	"x-minio-meta-",
}

// extractMetadataFromReq extracts metadata from HTTP header and HTTP queryString.
func extractMetadataFromReq(ctx context.Context, r *http.Request) (metadata map[string]string, err error) {
	return extractMetadata(ctx, textproto.MIMEHeader(r.Form), textproto.MIMEHeader(r.Header))
}