SubviewsCollection
An opaque collection representing the subviews of view.
Declaration
struct SubviewsCollectionOverview
Subviews collection constructs subviews on demand, so only access the part of the collection you need to create the resulting content.
You can get access to a view’s subview collection by using the Group/init(sectionsOf:transform:) initializer.
The collection’s elements are the pieces that make up the given view, and the collection as a whole acts as a proxy for the original view.