@interface UIFocusRingStyle : NSObject + (double)cornerRadius; + (double)borderThickness; + (double)alphaThreshold; + (double)animationActualDuration; + (double)animationConfiguredDuration; + (double)animationSpeed; + (double)animationTruncationDuration; + (double)childrenFocusedBorderThickness; + (double)maxAlpha; + (double)maxRadius; + (double)minAlpha; + (double)minRadius; @end