CollapsibleWheelUsage.swift

struct ContentView: View {
  @State private var selection = 1
  let items = [0, 1, 2, 3, 4, 5, 6, 7, 8]

  var body: some View {
    NavigationStack {
      Form {
        CollapsibleWheelPicker(selection: $selection) {
          ForEach(items, id: \.self) { item in
            Text("\(item)")
          }
        } label: {
          Text("Cups of Water")
          Spacer()
          Text("\(selection)")
        }
      }
    }
  }
}