swiftui:如何有条件地更换CommandGroup？

struct ContentView: View {
    @State private var showAdvancedOptions = false
    
    var body: some View {
        NavigationView {
            Text("Content View")
                .navigationTitle("App")
                .toolbar {
                    ToolbarItem(placement: .navigationBarTrailing) {
                        if showAdvancedOptions {
                            CommandGroup {
                                Button("Option 1") {
                                    // 处理选项 1 的操作
                                }
                                Button("Option 2") {
                                    // 处理选项 2 的操作
                                }
                            }
                        } else {
                            CommandGroup {
                                Button("Advanced Options") {
                                    showAdvancedOptions.toggle()
                                }
                            }
                        }
                    }
                }
        }
    }
}