System/Library/PrivateFrameworks/TextInputUI.framework

TUIDrawingView.h

NSObject
>
UIResponder
>
UIView

@class UIBezierPath, CAShapeLayer;

@interface TUIDrawingView : UIView

@property (retain, nonatomic) UIBezierPath *path;
@property (readonly, nonatomic) CAShapeLayer *shapeLayer;

+ (Class)layerClass;

- (void).cxx_destruct;

@end