When trying to connect a Navigation Bar Button to the Exit item of a ViewController in Xcode 6 (not really sure if it\'s an Xcode 6 problem but worth mentioning as it is in
In Swift 2.3 I found the external name of the parameter must be "withUnwindSegue":
@IBAction func unwindToThisView(withUnwindSegue unwindSegue: UIStoryboardSegue) { ... }