pub type NSCollectionLayoutSectionVisibleItemsInvalidationHandler = *mut DynBlock<dyn Fn(NonNull<NSArray<ProtocolObject<dyn NSCollectionLayoutVisibleItem>>>, CGPoint, NonNull<ProtocolObject<dyn NSCollectionLayoutEnvironment>>)>;Available on crate features
block2 and objc2-core-foundation and UICollectionViewCompositionalLayout and UIDynamicBehavior only.