title: instantiateInitialViewController(withIdentifier: String) does not exist?
body: <p>Here is a screenshot from Xcode 8.2:</p>
  
  <p><a href="https://i.stack.imgur.com/bBbRW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bBbRW.png" alt="enter image description here"></a></p>
  
  <p>If the function does not exist, how do you add identifier to a view controller these days?</p>