toLabeledTzTimeOfDayString method
Converts the time of day of this date-time to an HH:mm:ss string in
either local or UTC time zone, followed by the timeZoneLabel of that
zone in parentheses.
Implementation
String toLabeledTzTimeOfDayString(bool inUtc) {
return '${toTzTimeOfDayString(inUtc)} (${timeZoneLabel(inUtc)})';
}