如何在不实现NSItemProviderWriting的情况下使用.onDrag

struct ContentView: View {
    @State private var draggedItem: CustomData? = nil
    
    var body: some View {
        VStack {
            Text("Drag me")
                .padding()
                .background(Color.blue)
                .foregroundColor(.white)
                .cornerRadius(10)
                .onDrag {
                    self.draggedItem = CustomData(name: "Custom Data")
                    let provider = NSItemProvider(object: self.draggedItem!)
                    provider.registerDataRepresentation(forTypeIdentifier: "com.example.customdata", visibility: .all) { completion in
                        completion(self.draggedItem, nil)
                        return nil
                    }
                    return provider
                }
            
            if let item = draggedItem {
                Text("Dragged item: \(item.name)")
                    .padding()
                    .background(Color.green)
                    .foregroundColor(.white)
                    .cornerRadius(10)
            }
        }
    }
}

struct CustomData: Identifiable, Hashable {
    let id = UUID()
    let name: String
}