public HazelcastInstance getHazelcastInstance() {
        return hazelcastInstance;
    }
Returns the {@code HazelcastInstance} from which named {@link java.util.concurrent.ConcurrentMap ConcurrentMap}
instances will be acquired to create {@link MapCache} instances.

@return the {@code HazelcastInstance} from which named {@link java.util.concurrent.ConcurrentMap ConcurrentMap}
instances will be acquired to create {@link MapCache} instances.
support/hazelcast/src/main/java/org/apache/shiro/hazelcast/cache/HazelcastCacheManager.java