timeZoneFormatted method
Implementation
String timeZoneFormatted([bool seperateWithColon = true]) {
final int hours = timeZoneOffset.inMinutes ~/ 60;
final int minutes = timeZoneOffset.inMinutes - (hours * 60);
return (timeZoneOffset.isNegative ? "-" : "+") +
hours.toString() +
(seperateWithColon ? ":" : "") +
minutes.toString();
}