formatTimeZoneName method
Implementation
String formatTimeZoneName() {
final int hours = offset.truncate();
final int minutes = ((offset - hours) * 60).round();
final String offsetSign = hours >= 0 ? '+' : '-';
final String offsetString =
'$offsetSign${hours.abs().toString().padLeft(2, '0')}:${minutes.abs().toString().padLeft(2, '0')}';
return '(GMT$offsetString) $name';
}