@interface _TtC12GameCenterUIP33_70BCE0F81E66D9FA90EE8BB9B414A94429CollectionViewLayoutContainer : NSObject <NSCollectionLayoutContainer>
@property (nonatomic) void /* unknown type, empty encoding */ contentSize;
@property (nonatomic, readonly) struct CGSize { double x0; double x1; } effectiveContentSize;
@property (nonatomic) void /* unknown type, empty encoding */ contentInsets;
@property (nonatomic) void /* unknown type, empty encoding */ effectiveContentInsets;
- (id)init;
@end