@class NSMutableDictionary; @interface PKDiscoveryLayout : UICollectionViewLayout { NSMutableDictionary *_attributesPerIndexPath; NSMutableDictionary *_headersPerIndexPath; struct CGSize { double width; double height; } _currentSize; } @property (nonatomic) double interimSpacing; @property (nonatomic) double lineSpacing; @property (nonatomic) BOOL isScrollable; - (struct CGSize { double x0; double x1; })collectionViewContentSize; - (void)prepareLayout; - (id)layoutAttributesForElementsInRect:(struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })a0; - (id)init; - (void).cxx_destruct; - (void)_adjustItems:(id)a0 withLateralMove:(double)a1; @end