title: UISearchBar access to clear text button for UIAccessibility
body: <p>For a personal application conform to UIAccessibility and VoiceOver I need to change the UIAccessibilty label of the clear text button (gray cross) in a UISearchBar.</p>
  
  <p>I don't now how to access to this element.</p>
  
  <p>I try something like </p>
  
  <pre><code>class ViewController: UIViewController, UISearchBarDelegate
  {
    @IBOutlet weak var searchBar: UISearchBar!
  
    weak var btnCancel: UIButton?
  
    override func viewDidLoad()
    {
      super.viewDidLoad()
  
      for subView in searchBar.subviews
      {
        for subSubView in subView.subviews
        {
          if subSubView.isKindOfClass(UIButton)
          {
            btnCancel = subSubView as? UIButton
  
            btnCancel?.isAccessibilityElement = true
  
            btnCancel?.accessibilityLabel =  NSLocalizedString("Clear Text", comment: "")
          }
        }
      }
    }
  }
  </code></pre>
  
  <p>I try it on viewDidLoad ;  searchBar textDidChange ; searchBarTextDidBeginEditing ; </p>
  
  <p>I never found any button</p>
  
  <p>Your help is welcome</p>