anchor.diff:      try {
         // ignore: omit_local_variable_types
         final int permission =
  -          await methodChannel.invokeMethod('requestPermission');
  +          await _methodChannel.invokeMethod('requestPermission');
   
         return permission.toLocationPermission();
       } on PlatformException catch (e) {
  
positive.code:     try {
        // ignore: omit_local_variable_types
        final int permission =
            await methodChannel.invokeMethod('checkPermission');
  
        return permission.toLocationPermission();
      } on PlatformException catch (e) {
  
negative.code:       return _positionStream!;
      }
  
      var positionStream = _eventChannel.receiveBroadcastStream(
        locationOptions.toJson(),
      );
  
  