#import @interface CATracingLayer : CALayer @end @interface UITracingLayerView : UIView @end @interface CALayer (Tracing) - (id _Nullable)traceableInfo; - (void)setTraceableInfo:(id _Nullable)info; - (bool)hasPositionOrOpacityAnimations; - (void)setInvalidateTracingSublayers:(void (^_Nullable)())block; - (NSArray *> * _Nonnull)traceableLayerSurfaces; - (void)adjustTraceableLayerTransforms:(CGSize)offset; - (void)invalidateUpTheTree; @end