selectedBackgroundView
The view that displays just above the background view for a selected cell.
Declaration
var selectedBackgroundView: UIView? { get set }Discussion
You can use this view to give a selected cell a custom appearance. When the cell has a selected state, this view layers above the backgroundView and behind the contentView.
A background configuration is mutually exclusive with background views, so you must use one approach or the other. Setting a non-nil value for this property resets backgroundConfiguration to nil.