System/Library/PrivateFrameworks/AuthKitUI.framework

AKRoundedButton.h

NSObject
>
UIResponder
>
UIView
>
UIControl
>
UIButton

@interface AKRoundedButton : UIButton

+ (id)roundedButton;

- (void)setHighlighted:(BOOL)a0;
- (void)_updateColor;
- (struct UIEdgeInsets { double x0; double x1; double x2; double x3; })_signInButtonEdgeInsets;

@end