Brett Meyer commented on an issue
Hibernate ORM / Improvement HHH-7150
evictAll() method is missing in SessionFactory getCache()
I was trying to test HHH-7016 in non-jpa API(i.e using Sessionfactory instead of EntityManagerFactory)
but found that evictAll() is simply not supported by SessionFactory.

I feel this is quite a convenience method to evict everything from secondlevelcache and will be nice to have.