Sounds like the official doc/example is coming in 4.21
Here is a great write up for implementing it in 4.21 that I hope to try out soon as well:
where he mentions two example projects coming with 4.21 showing how to do it.
PS: 4.21 P1 is available for download since this week on the Epic launcher I’m not sure if the example projects are already bundled with it but if not they can’t be far away.