title: Equivalent method to NavigationService.Refresh in Windows Phone 8.1?
body: <p>I'd like to refresh the content of my app apge in WP 8.1.  In WP 8, there was:</p>
  
  <pre><code>NavigationService.Refresh()
  </code></pre>
  
  <p>But I haven't been able to find anything similar in 8.1.</p>
  
  <p>Any suggestions?</p>