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