title: inputAccessoryView is readonly now?
body: <p>I have an Objective-C project, where I would like to add an inputAccessoryView to a subclass of UITextView. The old way was </p>
  
  <p><code>self.myTextView.inputAccessoryView = myView;</code> </p>
  
  <p>(where myView was a UIView)</p>
  
  <p>Now XCode (9.2) says "Assignment is readonly property"</p>
  
  <p>When I try to use a setter, like this:</p>
  
  <pre><code>[self.myTextView setInputAccessoryView: myView];
  </code></pre>
  
  <p>XCode says "No visible @interface for 'customTextView' declares the selector 'setInputAccessoryView:'"</p>
  
  <p>Anybody knows why is this? And how to actually set an inputAccessoryView?</p>
  
  <p>Thanks a lot!</p>