What to return from func focusItems(in rect: CGRect) -> [any UIFocusItem]

I have a warning on my AR app Virtual Tags that since July does not show its camera information telling: "ARCL.SceneLocationView implements focusItemsInRect: - caching for linear focus movement is limited as long as this view is on screen."

I tried inserting the function, but documentation does not explain what it should return and how to generate it. Is someone able to help me? Thanks,

What to return from func focusItems(in rect: CGRect) -> [any UIFocusItem]
 
 
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