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	 /*
      * TODO Lab 5: Replace the ConcurrentHashMap with ConsistentMap
      *
      * You should use storageService.consistentMapBuilder(), and the
      * serializer: Serializer.using(KryoNamespaces.API)
      */
      nets = storageService.<String, Set<HostId>>consistentMapBuilder()
                .withSerializer(Serializer.using(KryoNamespaces.API))
                .withName("byon-networks")
                .build();

      networks = nets.asJavaMap();

You will notice a few compilation errors after making this change. This is because the ConcurrentMap returns a Versioned<Value>, rather than just a Value. You should fix the compilation errors marked by Lab 5 TODOs.

Next, let's recompile your application and push it to the ONOS cluster. You should now be able to create, update, and delete networks from any node, and your distributed store will the application running on all instances in sync. Open a few terminals and test this on the different instances. 

Lab 6: Network Events

Components in ONOS can use events to asynchronously notify other components when their state has changed. We will demonstrate how this can be done by creating a new event type, NetworkEvent, to notify listeners when a virtual network has been updated. These events will be fired by the distributed store and forwarded by the manager to listeners in the peer ONOS instance. 

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