I have a view ButtonView with a @Binding var engine: CHHapticEngine?. I call it from my other views with ButtonView(engine: $engine), but I can’t seem to work out how to call it from #Preview so the canvas will work.

I’ve tried several variations of this to no avail:

#Preview {
    @State var engine: CHHapticEngine?
    _ = ButtonView(engine: $engine)
}

What should I put in my #Preview block to make this work?