No code sample for building Complications with SwiftUI

Hey!
The WWDC video "Building complication with SwiftUI" contains a code sample called "Coffee Tracker" that's supposed to include the new code the video presents, however, the code is old and does not contain the new APIs specifically using SwiftUI in building complications.

Also, I was unable to find any documentations on how to actually link the CLKComplicationDescriptor with SwiftUI views.

Thanks