It would be nice for org.hibernate.cache.jcache.JCacheRegionFactory to be refactored to have a "getCacheManager()" protected method that subclasses can override so they can get the CacheManager in some other way. Currently, in order to get a different CacheManager than by using the the means by which the "start" currently provides involves copying the JCacheRegionFactory class and modifying it - using inheritance would be more maintainable and all around better.