shutdownNow method
override
Kill the spawned process immediately irrespective of weather the current inputs are processed or not.
Implementation
@override
Future<void> shutdownNow() async {
_isActive = false;
// Mass murder.
_isolate.kill(priority: Isolate.immediate);
_processingComplete.complete();
// Clean up connections to allow Main Isolate to exit.
_fromProcessPort.close();
}