let view = UIView(frame: CGRect(x: 0.0, y: 0.0, width: 50.0, height: 50.0))
view.backgroundColor = UIColor.red

view.koala🐨.layoutSubviews { ✅ // inject code after original implementation
    $0.backgroundColor = UIColor.blue
}

let viewController = UIViewController()

viewController.koala🐨.setTitle { ✅
    let title = $1.arguments()[0] as NSString
}

let viewController = UIViewController()

viewController.koala🐨.before.viewWillDisappear { ✅
    $1.arguments()[0] = true
}

let viewController = UIViewController()

viewController.koala🐨.prefersStatusBarHidden { () -> Bool in ✅
    return Bool.random()
}

let viewController = UIViewController()
viewController.title = "Hello"

viewController.koala🐨.title { (_, _, result) -> NSString? in ✅
    return result?.appending(" world") as NSString?
}