@interface CUIPSDGradientStop : NSObject <NSCoding, NSCopying> { double location; } + (void)initialize; - (id)initWithLocation:(double)a0; - (double)location; - (void)encodeWithCoder:(id)a0; - (void)setLocation:(double)a0; - (id)initWithCoder:(id)a0; - (id)copyWithZone:(struct _NSZone { } *)a0; - (BOOL)isColorStop; - (BOOL)isDoubleStop; - (BOOL)isOpacityStop; @end