startScan method
Implementation
Future<void> startScan({pairedDevices = false}) async {
final bondedDevices = await _channel.invokeMethod('action_start_scan', pairedDevices);
for (var device in bondedDevices) {
final d = BluetoothDevice(device['name'], device['address'], paired: true);
_pairedDevices.add(d);
_controller.add(d);
}
}