U3 Occlusion System: How can i now via script which object are occluded in realtime?

How can i now via script which objects are occluded in realtime? Is there an object or property that tells me it?
I need to know because i load dynamically the objects. In case an object is occluded i not load it.

Thank you

There is no property for “am I being occluded” as such.
But the object will no longer render when its occluded, so the same stuff happens that happens if the object would go behind you or out of view to left and right (onenable, ondisable etc)