How do I activate SSL for custom domains on Google Appengine?
The instructions I have read, at https://developers.google.com/appengine/docs/ssl or https://support.google.com/a/answer/2644334?hl=en , seem to refer to an old version of the admin console for Google Apps.
I looked at https://support.google.com/a/answer/2644334?hl=en , but on the current console, if I do Security > Advanced Settings > Set up SSO, there is no place where it asks for the AppEngine Application ID.
I looked at https://developers.google.com/appengine/docs/ssl . It directs me to go to the Admin Console of my App domain, and to find a Domain Settings tab and then go to the SSL subtab. There is no Domain Settings tab, however, and the "Domains" tab only allows me to add domains (without http / https mention).
So, how do I setup SSL for my appengine app that uses a custom domain?
Note: this question has been asked already on StackOverflow, some years ago, but the google dashboards have changed since then, and the information I could find is no longer relevant.