I think he meant as existing code you can pattern off of, not for direct inclusion. The OAuth 2.0 Playground at https://developers.google.com/oauthplayground/

I think he meant as existing code you can pattern off of, not for direct inclusion. The OAuth 2.0 Playground at https://developers.google.com/oauthplayground/ https://developers.google.com/oauthplayground/ is another good resource for understanding refresh tokens and access tokens and how to get / exchange them.