getNowDateTimeYyyyMmDdHhMmSs function
Returns the current date and time in the format: yyyyMMddHHmmss.
Implementation
String getNowDateTimeYyyyMmDdHhMmSs() {
final dT = DateTime.now();
return '${dT.year}${dT.month}${dT.day}${dT.hour}${dT.minute}${dT.second}';
}