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To be able to use the archetype overlay mechanism such that we can add the custom, table, and topology-overlay samples incrementally, we actually create three separate UiExtension instances and register them with the UiExtensionService individually. If your ONOS application was indeed creating multiple views, it should define a single UiExtension instance and declare each of the views and message handlers in one place. See UiExtensionManager.createCoreExtension() for an example of how to do this. Also see the sample application onos-app-uiref.



This is the base class for UI functionality. Things to note: