When the completion handler is optional (and defaults to nil), should the async method have the @discardableResult attribute? (And vice versa.)
class NSExtensionContext: NSObject {
func open(_: URL, completionHandler: ((Bool) -> Void)? = nil)
+ @discardableResult
+ func open(_: URL) async -> Bool
}
When the result is discarded, can overload resolution prefer the non-async method?