title: iOS: Accessibility Label for CALayer
body: <p>I want to add accessibilityLabel for some of my CALayer's.
  Here is the example:</p>
  
  <pre><code>CALayer *testLayer = [CALayer layer];
  [self.view.layer addSublayer:testLayer];
  testLayer.backgroundColor = [UIColor purpleColor].CGColor;
  testLayer.isAccessibilityElement = YES;
  testLayer.accessibilityLabel = @"Some text";
  testLayer.frame = CGRectMake(0, 300, 100, 100);
  </code></pre>
  
  <p>This approach doesn't work for me. Is it possible to make accessibility working for CALayers?<br>
  I don't want to use accessibility container in superview (there is complex hierarchy)</p>
  
  <p>Thank you!</p>