System/Library/PrivateFrameworks/AvatarUI.framework

AVTStickerSheetCollectionView.h

Download AVTStickerSheetCollectionView.h

1. NSObject
2. >
3. UIResponder
4. >
5. UIView
6. >
7. UIScrollView
8. >
9. UICollectionView

@interface AVTStickerSheetCollectionView : UICollectionView

- (void)safeAreaInsetsDidChange;

@end