UICollectionLayoutListConfiguration.FooterMode.supplementary
A footer mode that uses supplementary views to show footers.
Declaration
case supplementaryDiscussion
Choose this footer mode to use supplementary views with elementKindSectionFooter as the section footer.
By default, lists that use the UICollectionLayoutListConfiguration.Appearance.plain and UICollectionLayoutListConfiguration.Appearance.sidebarPlain list appearances use pinned footers. You must use this footer mode if you want to opt into this default pinning behavior.