如何在SwiftUI中使子视图的阴影从父视图中渗出？

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Parent View")
                .font(.title)
                .padding()
                .background(Color.blue)
                .foregroundColor(.white)
                .cornerRadius(10)
                .overlay(
                    VStack {
                        Text("Child View")
                            .font(.headline)
                            .padding()
                            .background(Color.red)
                            .foregroundColor(.white)
                            .cornerRadius(10)
                    }
                    .padding()
                    .background(Color.yellow)
                    .cornerRadius(10)
                    .shadow(radius: 10)
                )
                .padding()
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}