Present a popover from an arbitrary anchor point in Swift

Question

I know how to present a popover from a bar button item as is described in this answer (for both iPhone and iPad).

I would like to add a popover for an arbit

Answer 1

Update to func syntax above:

func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentatinStyle { 
    return .none 
}

For some reason the old syntax is still allowed but is not active and will not implement popup or anchor correctly.