title: Getting the URL of a file my app is opening via openURL:
body: <p>I configured my app with a custom file type. I added the information required in the Info.plist file (Document Types and Exported UTIs). Now iOS recognizes my file type and associates it with the app. So, for example, when I open Mail, and I see my file as an attachment, I can click on it and select to open with my app.</p>
  
  <p>How I can get the URL of the file from my app? I tried to use <code>OpenUrl</code> on <code>UIApplication</code>, but it does not work.</p>
  
  <p>Anyone know how to do that?</p>