getPreviousPeriodDate method
get last period date. Default is 1971-01-01
Implementation
Future<DateTime> getPreviousPeriodDate() async {
String defaultDate = "1971-01-01";
DateTime returnDateTime = DateTime.parse(defaultDate);
if (_lastPeriodDate.isNotEmpty) {
returnDateTime = DateTime.parse(_lastPeriodDate);
}
return returnDateTime;
}