* Deletes suggest items by a query string.
     *
     * @param index The index name
     * @param queryString The query string
     * @return The SuggestDeleteResponse
     */
    public SuggestDeleteResponse deleteByQuery(final String index, final String queryString) {
        return deleteByQuery(index, QueryBuilders.queryStringQuery(queryString).defaultOperator(Operator.AND));
    }

    /**
     * Deletes suggest items by a query builder.

        private String queryString;
        private String servletPath;
        private String method = "GET";
        private String requestURI = "/";
        private final Map<String, String> headers = new java.util.HashMap<>();

        public void setQueryString(String queryString) {
            this.queryString = queryString;
        }

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

    /**
     * Converts a term query ending with asterisk to a prefix query.
     *

        purgeDocJob.execute();

        // Verify the query can be converted to string (for logging)
        assertNotNull(deleteQuery);
        String queryString = deleteQuery.toString();
        assertNotNull(queryString);
        assertTrue(queryString.contains("expires"));
    }

    @Test
    public void test_execute_withIOException() {

    }

    /**
     * Deletes suggest items by a query string.
     * @param queryString The query string.
     * @return The SuggestDeleteResponse.
     */
    public SuggestDeleteResponse deleteByQuery(final String queryString) {
        ensureOperations();
        return deletionOps.deleteByQuery(index, queryString);
    }

    /**
     * Deletes suggest items by a query builder.

    }

    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");

        // Setup - test with a complex message code that includes parameters
        final String queryString = "field:value AND (";
        final VaMessenger<FessMessages> complexMessageCode =
                messages -> messages.addErrorsInvalidQueryParseError(UserMessages.GLOBAL_PROPERTY_KEY);
        final String message = "Failed to parse query: " + queryString;

        // Execute

                }
                queryBuilder = boolQueryBuilder;
            }

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

    /**
     * Builds a filter query.
     * @param fieldName The field name.
     * @param words The words to filter by.
     * @return The QueryBuilder instance.
     */

        assertNotNull(builder);
        assertTrue(builder instanceof DefaultQueryBuilder);

        // Should not include important_content field when boost is negative
        String queryString = builder.toString();
        assertFalse(queryString.contains("important_content"));
    }

    @Test
    public void test_register() {
        // Save the original processor

// 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))
}