@Inspectable(initialValue: 0, label: Text("duration"), control: { Slider(value: $0, in: 1...10, label: { Text("duration") }) })
var test: CGFloat

@Inspectable(label: Text("duration"), control: { Slider(value: $0, in: 1...10, label: { Text("duration") }) })
var test: CGFloat = 0 [^Archive.zip] 

struct MyText<V> {
  let label: String
  let value: V
}
extension MyText where V == Void {
  init(_ label: String, defaulted: Int = 17) {
    self.label = label
    self.value = ()
  }
}
struct ImagePulse {
  @Inspectable(control: { MyText("duration") })
  var test: Double = 0
}
@propertyWrapper
final class Inspectable<Value> {
  var wrappedValue: Value
  
  init<V>(wrappedValue initialValue: Value, control: @escaping () -> V) {
    self.wrappedValue = initialValue
  }
}