   }
 
 }
+
+extension ButtonsSimpleExampleSwiftViewController {
+   class func catalogBreadcrumbs() -> [String] {
+      return ["Buttons", "Buttons (Swift)"]
+   }
+   
+   class func catalogIsPrimaryDemo() -> Bool {
+      return false
+   }
+}


  // MARK: Private

  func centerView(view: UIView, onView: UIView) {
    onView.addConstraint(NSLayoutConstraint(
      item: view,
      attribute: .centerX,

class ButtonsSimpleExampleSwiftViewController: UIViewController {

  let floatingButtonPlusDimension = CGFloat(24)
  
  override func viewDidLoad() {
    super.viewDidLoad()

