onStart method
Callback when this executor is started. Returns true if successfully started, false otherwise.
Implementation
@override
Future<bool> onStart() async {
// collect the current connectivity status on sampling start
var connectivityStatus =
await connectivity.Connectivity().checkConnectivity();
addMeasurement(Measurement.fromData(
Connectivity.fromConnectivityResult(connectivityStatus)));
return super.onStart();
}