Cannot find "Travel App Data Model" page for latest versions of Couchbase

Travel App Data Model is documented in https://docs.couchbase.com/server/4.5/travel-app/travel-app-data-model.html

I cannot find newer version of this app data model in versions after 4.5. There is a button for "A newer version of this documentation is available" View latest, but it just takes to home page of latest documentation, not to the specific page we are currently looking in.