如何在SwiftUI中使UIViewRepresentable在tvOS上可聚焦？

struct FocusableView: UIViewRepresentable {
    func makeUIView(context: Context) -> UIView {
        // 创建并返回一个自定义的UIView
        let view = UIView()
        // 设置视图的焦点环境
        view.focusGroupIdentifier = "MyFocusGroup"
        return view
    }
    
    func updateUIView(_ uiView: UIView, context: Context) {
        // 更新UIView的内容
    }
    
    // 实现tvOS上的焦点聚焦
    func didUpdateFocus(in context: UIViewRepresentableContext<FocusableView>, with coordinator: UIFocusUpdateContext, coordinateSpace: UIFocusCoordinateSpace) {
        // 处理焦点聚焦的逻辑
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            Text("SwiftUI View")
            FocusableView()
                .frame(width: 200, height: 200)
        }
    }
}