The CockroachDB and PostgreSQL dialects, and their “legacy” counterparts, could expose the “minimal version” they support at least to subclasses.

For PostgreSQL, it’s also useful to expose the “driver kind” state to subtypes.

Finally, I’m having needs to override the types being registered by contributeTypes in Hibernate Reactive, but it’s tricky do do w/o overriding also the super.contributeTypes method.