System/Library/Frameworks/Social.framework

_SLSheetMaskLayer.h

NSObject
>
CALayer

@class UIColor;

@interface _SLSheetMaskLayer : CALayer

@property (nonatomic) double clipCornerRadius;
@property (retain, nonatomic) UIColor *clipBackgroundColor;

- (void)drawInContext:(struct CGContext { } *)a0;
- (void).cxx_destruct;

@end