PSO collection & integration in UE5.5+

Hello,

I’m trying to integrate PSO in a UE 5.5 game, but Manually Creating Bundled PSO Caches in Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community doesn’t match what the engine produces.
There are no .shk files in /PipelineCaches, but instead .ushaderbytecode & .assetinfo.json in \ShaderLibrarySource, is there any documentation somewhere about how to integrate them in a new package?