No working examples of SwiftUI/WKView/Mac OS Big Sur / Xcode 12

I'm trying to adopt SwiftUI after previously using frameworks like PySide and PyQt. I'm bewildered at the fact that one of the the most common tasks and programming examples of incorporating a Browser into one's app is missing a working, authoritative version from whatever google has managed to find over the entire Apple developer web presence. Actually, as a fan of the platforms and the development facilities, it saddens me.

This is one of the more common examples in Qt/PyQt/PySide/PyGTK/Flutter here.

The examples that do exist seem to have the following issues:

• Mismatch with latest version of Xcode / Catalyst

• Uses "classic" storyboard workflow (doesn't seem to be compatible with the new SwiftUI declarative paradigm )

• Mixes Obj-C code and not suited for latest versions of Xcode and iOS

• Otherwise only work on iOS to a varying degree of success.

Can someone from the apple developer support provide us with a canonical, annotated, straightforward example for incorporating a WebView into the new SwiftUI non storyboard, non UIViewController (which gives scope errors in the new paradigm for good reason) that can be added as a view in the "multiplatform app" target in latest Xcode?

Many thanks!

(this has the UIViewController issue https://developer.apple.com/documentation/webkit/wkwebview)