start method
Implementation
Future<void> start() async {
await _requestPlatformPermissions();
final ServiceRequestResult result =
await FlutterForegroundTask.startService(
serviceId: 100,
notificationTitle: 'OpenListApp Service',
notificationText: '',
callback: startInternalPluginService,
);
if (result is ServiceRequestFailure) {
throw result.error;
}
}