如何在SwiftUI视图上包装这个自定义.if扩展中的#available？

import SwiftUI

extension View {
    @ViewBuilder
    func `if`<Content: View>(_ condition: Bool, @ViewBuilder then content: () -> Content) -> some View {
        if condition {
            content()
        } else {
            EmptyView()
        }
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello, SwiftUI!")
            
            // 使用自定义的 .if 扩展，并结合 #available 检查
            self.if(#available(iOS 15.0, *)) {
                Text("This is only visible on iOS 15.0 and later")
                    .foregroundColor(.blue)
            }
        }
    }
}

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