title: How to access list of editors and viewers in DriveApp?
body: <p>I'm trying to access list of editors or viewers, but can't find method to do that in documentation:
  <a href="https://developers.google.com/apps-script/reference/drive/drive-app" rel="nofollow">https://developers.google.com/apps-script/reference/drive/drive-app</a></p>