@Override
    public void close() {
        this.instance.shutdown();
    }
This is {@link RegisteredServiceHazelcastDistributedCacheManager}.

@author Misagh Moayyed
@since 5.2.0
support/cas-server-support-service-registry-stream-hazelcast/src/main/java/org/apereo/cas/services/RegisteredServiceHazelcastDistributedCacheManager.java