title: How to create Custom Action In FileProviderUI
body: <p>According to <a href="https://developer.apple.com/videos/play/wwdc2017/243/" rel="nofollow noreferrer">WWDC Session 2017</a> In last 10 minutes of video the presenters have mentioned about custom actions.
  In this case Operations are scoped to files from your extension and Interface is provided by a UI extension.</p>
  
  <p>I tried implementing the same but was unsussessfull, This is a new feature and could't find any data related to this feature.</p>
  
  <p>Anyone tried this feature? Is there any sample code/ app for the same?</p>