@propertyWrapper
public struct Noisy {
  private var value: Int

  public init(wrappedValue: Int) {
    value = wrappedValue
  }

  public var wrappedValue: Int {
    get { print("get!"); return value }
    set { print("set!"); value = newValue }
  }
}

class Test {
  @Noisy var foo: Int = 0

  func getAndSet() {
    print("got: \(self.foo)")
    self.foo = 42
    print("done")
  }
}

class Subclass: Test {
  override var foo: Int {
    get { print("subclass get"); return super.foo }
    set { print("subclass set"); super.foo = newValue }
  }
}

let x = Test()
x.getAndSet()
print("---")

let y = Subclass()
y.getAndSet()

get!
got: 0
set!
done
---
subclass get
get!
got: 0
set!
done