Where is updateTask called?

[theDaveB]

I am new to SwiftUI and followed along with this tutorial, well part 1 mostly but I can't see any code that calls the updateTask function.

I have edited the code to suit a app am working on and this is the only thing I can't get working (editing a task) but then I realised updateTask doesn't seem to be used any where.

Sorry I can't seem to mark this post as a question.