About this demo session:
https://developer.apple.com/videos/play/wwdc2019/240/
Is says that:
"see how to incorporate device-specific features and how to make changes in SwiftUI by following along with a starter project, available for download."
But there is no project to download:
The Landmark SwiftUI bellow is iOS only
https://developer.apple.com/tutorials/swiftui/interfacing-with-uikit
Where can I download Landmark MacOS?
Thanks