title: UIViewPropertyAnimator - simply stop all animations, rather than a specific one?
body: <p>In <code>UIViewPropertyAnimator</code>, is there a way to just stop all <code>UIViewPropertyAnimator</code> animations?</p>
  <p>Or perhaps simply get all current animations - then of course you could <code>stop</code> them all.</p>
  <p>Can this be done?</p>
  <p>Or do you really have to</p>
  <ul>
  <li>(a) do only one per <code>UIViewPropertyAnimator</code>,</li>
  </ul>
  <p>and,</p>
  <ul>
  <li>(b) keep a reference to each of those?</li>
  </ul>