title: UITableView and new methods for tvOS
body: <p>I am creating a test tvOS app. I have an image (outside the tableview) and when "focused" NOT selected, I would like the image to change... I know that apple has added a couple methods for focus. Could someone tell me which methods I would use to change this image for when it is in "focus"? and how would I use it?
  Would I use this method:</p>
  
  <pre><code>   - (BOOL)tableView:(UITableView *)tableView canFocusRowAtIndexPath:(NSIndexPath *)indexPath
  </code></pre>
  
  <p>or would I use: </p>
  
  <pre><code>  - (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
  </code></pre>
  
  <p>Please let me know! Thank you!</p>