You're given an array of image ids [3, 1, 2]. Download each image concurrently, but display them on screen in id order (1, 2, 3). How would you do that with Swift Concurrency?
Add a child task per id in withThrowingTaskGroup to download at the same time, collect results as (id, image) into a dictionary, then pull them out in ids.sorted() order. The point is separating completion order from display order.
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