func loadEntitySync() {
  // Create an world anchor at the origin and add it to the scene
  let anchor = AnchorEntity(world: [0,0,0])
  arView.scene.addAnchor(anchor)

  // Handle errors in case the file doesn't exist
  do {
    let usdzPath = "path/to/usdz/asset"
    let modelEntity = try ModelEntity.loadModel(named: usdzPath)
    anchor.addChild(modelEntity)
  } catch {
    print("file not found")
  }
}