register method
Implementation
register(JobRF1 jobRF) async {
WidgetsFlutterBinding.ensureInitialized();
await Workmanager().initialize(jobRF.job,
isInDebugMode:
false); //to true if still in testing lev turn it to false whenever you are launching the app
await Workmanager().registerOneOffTask("6", jobRF.name!);
}