title: Is there anything special I need to do in order to have accessibilityIncrement/accessibilityDecrement called when VoiceOver is on?
body: <p>I'm making sure an app I'm building is accessible and for the most part enjoying it. However, I'm trying to get <code>accessibilityIncrement</code>/<code>accessibilityDecrement</code> to work to no avail.</p>
  
  <p>I have a subclass of <code>UIView</code> and I'm overriding <code>accessibleTraits</code> to return <code>[super accessibleTraits] | UIAccessibilityTraitAdjustable;</code> and I've implemented </p>
  
  <p>In all other respects the view responds well when VoiceOver is on but the only method on <code>UIAccessibilityAction</code> I seem to be able to get to work with a 3 finger swipe up/down is <code>accessibleScroll</code>.</p>
  
  <p>Has anyone else encountered this? What am I missing?</p>