title: Google Drive API v3 Migration
body: <p>I decided to migrate from Google Drive API v2 to v3 and it was not an easy task. Even thought Google wrote this <a href="https://developers.google.com/drive/v3/web/migration">documentation</a>, there are many gaps in it and there is not much information about this on the web.</p>
  
  <p>I'm sharing here what I have found.</p>