protected Cache getRegion(String regionName) {
        Cache region = getCacheManager().getCache(regionName, String.class, Object.class);

        return region;
    }
Same class as org.primefaces.cache.EHCache3Provider
we need to copy it, to support 6.2.x elite
primefaces-showcase/src/main/java/org/primefaces/showcase/util/EHCache3Provider.java