ShapeResource.generateStaticMesh(from: MeshAnchor) does not exist

I'm trying to follow the WWDC23 example presented in Meet ARKit for spatial computing. and when implementing this method:

func processReconstructionUpdates() async {
        for await update in sceneReconstruction.anchorUpdates {
            let meshAnchor = update.anchor
            
            guard let shape = try? await ShapeResource.generateStaticMesh(from: meshAnchor) else { continue }
            
            switch update.event {
            …

ShapeResource.generateStaticMesh(from: MeshAnchor) doesn't seem to exist. It would only accept ShapeResourcegenerateStaticMesh(positions: [SIMD3<Float>], faceIndices: [UInt16]).

I'm using Version 15.0 beta 2 (15A5161b)