{
  "type": "object",
  "properties": {
    "projectPath": { "type": "string" },
    "platforms": { "type": "array", "items": { "enum": ["windows", "macos", "linux"] } },
    "windowConfig": { "type": "object" },
    "nativeChannels": { "type": "array" }
  },
  "required": ["projectPath"]
}

// Dart side
class NativeService {
  static const platform = MethodChannel('com.example/native');

  Future<String> getSystemInfo() async {
    return await platform.invokeMethod('getSystemInfo');
  }
}

// macOS (Swift)
let controller = FlutterViewController()
let channel = FlutterMethodChannel(name: "com.example/native",
                                   binaryMessenger: controller.engine.binaryMessenger)
channel.setMethodCallHandler { call, result in
    if call.method == "getSystemInfo" {
        result(ProcessInfo.processInfo.operatingSystemVersionString)
    }
}