@interface ActivityRingsUI.SpringAnimation : NSObject { void /* unknown type, empty encoding */ delay; void /* unknown type, empty encoding */ remainingDelay; void /* unknown type, empty encoding */ animationState; } @property (nonatomic, readonly) double value; @property (nonatomic, readonly) double target; - (id)init; - (BOOL)advanceWithDeltaTime:(double)a0; - (void)completeWithSnap; - (void)configureWithTension:(double)a0 friction:(double)a1 target:(double)a2; - (id)initWithInitialValue:(double)a0 delay:(double)a1; - (void)updateTarget:(double)a0; @end