controllerProvider property

Called when this ArcGISLocalSceneView needs an ArcGISLocalSceneViewController to associate with itself.

You must provide an ArcGISLocalSceneViewController via this callback. The callback will be called exactly once, shortly before onLocalSceneViewReady. The returned ArcGISLocalSceneViewController will be bound to this ArcGISLocalSceneView and must not be reused or associated with any other ArcGISLocalSceneView.

Use the controller to set the ArcGISLocalSceneViewController.arcGISScene and configure it. You may wish to create the controller earlier in the process, such as in State.initState, to start asynchronous tasks such as ArcGISScene.load.