CollapsibleWheelPicker.swift

struct CollapsibleWheelPicker<SelectionValue, Content, Label>: View where SelectionValue: Hashable, Content: View, Label: View {
    @Binding var selection: SelectionValue
    @ViewBuilder let content: () -> Content
    @ViewBuilder let label: () -> Label

    var body: some View {
        CollapsibleView(label: label) {
            Picker(selection: $selection, content: content) {
                EmptyView()
            }
            .pickerStyle(.wheel)
        }
    }
}