@interface PUSectionedGridLayoutInvalidationContext : UICollectionViewLayoutInvalidationContext @property (nonatomic) BOOL invalidateForVerticalScroll; @property (nonatomic) BOOL sectioningIsPreserved; @property (nonatomic) BOOL samplingIsPreserved; @property (nonatomic) BOOL invalidationHasBeenRedispatched; - (id)description; @end