title: Swift 4 conversion - Type 'NSLayoutConstraint' has no member 'FormatOptions'. What would be the right call?
body: <p>I have this section of code:</p>
  
  <pre><code>let menuScrollView_constraint_H:Array = NSLayoutConstraint.constraints(withVisualFormat: "H:|[menuScrollView]|", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)
  let menuScrollView_constraint_V:Array = NSLayoutConstraint.constraints(withVisualFormat: "V:[menuScrollView(\(menuHeight))]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)
  </code></pre>
  
  <p>And I keep getting <strong>"has no member"</strong> compiler errors for all of the <code>NSData</code> types in this class.</p>
  
  <p>This library I'm using was apparently updated to Swift 4.2.  How come these compiler errors are happening?</p>
  
  <p>For example, I noticed there is a public struct called NSLayoutFormatOptions. Would I use that instead? If so, how would I use it?</p>
  
  <p>Thank you for any insights </p>