From forum: http://forum.zkoss.org/question/83720/is-there-a-way-to-resolve-view-model-properties-as-input-to-client-side-javascripts/89122%20is%20it%20worth%20to%20be%20a%20new%20feature?
ZK-2674 Add an annotation for notify command
ZK-2675 Add an annotation for client command
ZK-2584 Support @command and @global-command for client side to use
ZK-2650 BindingParam annotation support converting from JSON to POJO automatically