gistfile1.txt

MyViewController: UIViewController {
  
  let refreshControl: UIRefreshControl = {
      $0.tintColor = Theme.currentTheme().textColor
      $0.addTarget(self, action: #selector(refresh(_:)), forControlEvents: .ValueChanged)
      return $0
  }(UIRefreshControl())
  
  
  override func viewDidLoad() {
    ... 
  }

}