*  Fix: Update the stored timestamp on conditional cache hits.
 *  New: Optimized HTTP/2 request header encoding. More headers are HPACK-encoded and string
    literals are now Huffman-encoded.
 *  New: Expose `Part` headers and body in `Multipart`.
 *  New: Make `ResponseBody.string()` and `ResponseBody.charStream()` BOM-aware. If your HTTP

     *
     * @param map the map
     * @return {@literal true} if the map is {@literal null} or empty
     */
    public static boolean isEmpty(final Map<?, ?> map) {
        return map == null || map.isEmpty();
    }

    /**
     * Returns {@literal true} if the given {@link Map} is not {@literal null} and not empty.
     *
     * @param map the map

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrLexerInvalidOperator: {
		Code:           "LexerInvalidOperator",
		Description:    "The SQL expression contains an invalid literal.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrLexerInvalidLiteral: {
		Code:           "LexerInvalidLiteral",
		Description:    "The SQL expression contains an invalid operator.",

		return
	}

	etag := getDecryptedETag(formValues, objInfo, false)

	// We must not use the http.Header().Set method here because some (broken)
	// clients expect the ETag header key to be literally "ETag" - not "Etag" (case-sensitive).
	// Therefore, we have to set the ETag directly as map entry.
	w.Header()[xhttp.ETag] = []string{`"` + etag + `"`}

	// Set the relevant version ID as part of the response header.