verifyMatch method Null safety

Future<MatchResult> verifyMatch(
  1. Template template1,
  2. Template template2
)

Implementation

Future<MatchResult> verifyMatch(Template template1, Template template2) async {
  ReceivePort receivePort = ReceivePort();
  Map<String, double> result = Map<String, double>();

  _sendPort.send({
    "event": _RecognizerEvents.VERIFY_MATCH,
    "sendPort": receivePort.sendPort,
    "template1": template1._impl.address,
    "template2": template2._impl.address
  });

  dynamic isolateResult = await receivePort.first;

  _checkException(isolateResult);

  result = isolateResult;

  return MatchResult(result["distance"]!, result["fa_r"]!, result["fr_r"]!, result["score"]!);
}