How to configure Gmail with OAuth2

In the Account reference, there is an OAuth2 option, I can even select "Google/Gmail" in the "OAuth2 email service provider". But I am unable to configure an account with Gmail. I am unsure what I have to put in the Client ID and Client secret field. Whatever I try, when I click on "Open default browser with request", I land on a page that  "Authorization error". Is there a simple way to make claws mail to work with Gmail? For now, I use the standard IMAP authentication but t will soon be removed by Google.