SKRenderer -- where art thou?

Here I was getting all hyped about pulling off-screen Metal textures out of SpriteKit after watching the session 609 video from WWDC2017. This was over a year ago!


And yet there are absolutely no overview docs on SKRenderer and there is no sample code either.

https://developer.apple.com/documentation/spritekit/skrenderer?language=objc


I find this very odd indeed. Does anyone here have any insight on this class, its docs or sample code?


BTW, the same goes for SKTransformNode.