}
	if !sa.Credentials.IsServiceAccount() {
		return UserIdentity{}, nil, errNoSuchServiceAccount
	}

	var embeddedPolicy *policy.Policy

	pt, ptok := jwtClaims.Lookup(iamPolicyClaimNameSA())
	sp, spok := jwtClaims.Lookup(policy.SessionPolicyName)
	if ptok && spok && pt == embeddedPolicyType {
		policyBytes, err := base64.StdEncoding.DecodeString(sp)
		if err != nil {
			return UserIdentity{}, nil, err
		}

                if (minorVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                incrementalVersion = getNextIntegerToken(tok[idx++]);
                if (incrementalVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                qualifier = tok[idx++];

            StringBuilder tokBuf = new StringBuilder(10);
            String tok;
            boolean inQuote = false;
            boolean tokStarted = false;
            boolean exit = false;
            while ((st.hasMoreTokens()) && (!exit)) {
                tok = st.nextToken(tokenList);
                switch (tok) {
                    case "\"":
                        inQuote = !inQuote;

DSTShifted","array1","array2","dontConvert","lengthDiff","diffs","compareArrays","proto$1","get$1","index","field","setter","listMonthsImpl","out","listWeekdaysImpl","localeSorted","shift","_calendar","_longDateFormat","formatUpper","toUpperCase","tok","_invalidDate","_ordinal","isFuture","_relativeTime","pastFuture","source","_eras","Infinity","isFormat","_monthsShort","monthName","_monthsParseExact","ii","llc","toLocaleLowerCase","_monthsParse","_longMonthsParse","_shortMonthsParse","firstDayO...