How to access RealityRenderer

I have a RealityView in my visionOS app. I can't figure out how to access RealityRenderer. According to the documentation (https://developer.apple.com/documentation/realitykit/realityrenderer) it is available on visionOS, but I can't figure out how to access it for my RealityView. It is probably something obvious, but after reading through the documentation for RealityView, Entities, and Components, I can't find it.