format method
Implementation
String format([String delimeter = '/', bool invert = false]) {
var date = toLocal();
int year = date.year;
int month = date.month;
int day = date.day;
String m = month > 9 ? '$month' : '0$month';
String d = day > 9 ? '$day' : '0$day';
if (invert) {
return '$year$delimeter$m$delimeter$d';
}
return '$d$delimeter$m$delimeter$year';
}