@class NSArray, NSSet, NSIndexSet, _UICollectionLayoutAuxillaryOffsets, NSDictionary, _UIRTree;
@protocol _UICollectionLayoutAuxillaryHosting;
@interface _UICollectionLayoutAuxillaryItemSolver : NSObject {
long long _memoizedSupplementaryKind;
NSArray *_memoizedAuxillaryItems;
NSSet *_elementKinds;
BOOL _hasEstimatedSizes;
NSIndexSet *_pinnedSupplementaryIndexes;
_UICollectionLayoutAuxillaryOffsets *_supplementariesThatCanAffectContentSize;
unsigned long long _containerSizeDependentAxes;
id<_UICollectionLayoutAuxillaryHosting> _auxillaryHost;
NSArray *_frames;
NSArray *_unpinnedFrames;
NSDictionary *_enrolledSupplementaryFramesDict;
NSDictionary *_supplementaryFramesKeyedByKindIndex;
_UIRTree *_supplementaryItemGeometricIndexer;
struct CGSize { double width; double height; } _contentSize;
struct CGPoint { double x; double y; } _hostContentOffset;
struct NSDirectionalEdgeInsets { double top; double leading; double bottom; double trailing; } _hostContentSizeInsets;
}
- (void).cxx_destruct;
@end