@interface _TtC12GameCenterUIP33_70BCE0F81E66D9FA90EE8BB9B414A94431CollectionViewLayoutEnvironment : NSObject <NSCollectionLayoutEnvironment> @property (nonatomic, retain) void /* unknown type, empty encoding */ container; @property (nonatomic, retain) void /* unknown type, empty encoding */ traitCollection; - (id)init; - (void).cxx_destruct; @end