init method
Initializes the HCE with the specified parameters
Implementation
@override
Future<void> init(
  dynamic args,
  StreamController<NfcApduCommand> streamController,
) async {
  await methodChannel.invokeMethod('init', args);
  methodChannel.setMethodCallHandler(
    (call) async {
      switch (call.method) {
        case 'apduCommand':
          final args = call.arguments;
          final int port = args['port'];
          final Uint8List command = args['command'];
          Uint8List? data = args['data'];
          if (data?.isEmpty ?? true) data = null;
          developer.log(
            'Received APDU command on port $port: ${command.map((e) => e.toRadixString(16))}'
            '.${data == null ? '' : '\nAdditional data in command: ${data.map((e) => e.toRadixString(16))}'}',
            name: 'NFC_HCE',
          );
          streamController.add(NfcApduCommand(port, command, data));
          break;
      }
    },
  );
}