protocol TTTT {
var sid: String? { get set }
}
class ViewController: UIViewController {
var sid: String = ""
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
}
extension ViewController: TTTT {
var sid: String? {
get {
}
set {
}
}
}
error: Invalid redeclaration of 'sid'
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