title: How to show folder tree in Google Picker
body: <p>I want to show in <code>google.picker.DocsView</code> both my and shared with me files and folders, with the folder structure.</p>
  
  <p>If I do not add <code>setIncludeFolders(true)</code>, all files are listed, but folders are missing.</p>
  
  <p>If I add <code>setIncludeFolders(true)</code>, files and folders of all levels are listed.</p>
  
  <p>I can add <code>.setOwnedByMe(true)</code> or <code>.setOwnedByMe(false)</code>. This fixes the folders structure issue. But in this case I cannot show both my and shared with me files in one view.</p>
  
  <p>Or I can add <code>.setParent('root')</code>. But then shared files and folders are missing.</p>
  
  <p>Is it possible to show all files and folders, but respecting the folder structure?</p>