From HHH-12735 Open (a duplicate of this ticket):

In particular, our current documentation mentions class org.hibernate.cache.infinispan.InfinispanRegionFactory, but the artifact hibernate-infinispan has been relocated to (org.infinispan:infinispan-hibernate-cache:9.1.3.Final) doesn't contain such class; it should probably rather be org.infinispan.hibernate.cache.InfinispanRegionFactory.

Also, I don't think our documentation links to the Infinispan documentation; we probably should.