Builder setSnapshotRegistry(SnapshotRegistry snapshotRegistry) {
            this.snapshotRegistry = snapshotRegistry;
            return this;
        }
The AclControlManager manages any ACLs that are stored in the __cluster_metadata topic.
If the ACLs are stored externally (such as in ZooKeeper) then there will be nothing for
this manager to do.
metadata/src/main/java/org/apache/kafka/controller/AclControlManager.java