readModel method
Implementation
Future<String> readModel() async {
final bleService = await getBleService();
final modelCharacteristic = bleService.characteristics.firstWhere(
(char) => char.uuid.str == ViamBluetoothUUIDs.modelUUID,
orElse: () => throw Exception('modelCharacteristic not found'),
);
final modelBytes = await modelCharacteristic.read();
return utf8.decode(modelBytes);
}