@interface CASpringAnimation : CABasicAnimation @property double velocity; @property double mass; @property double stiffness; @property double damping; @property double initialVelocity; @property BOOL allowsOverdamping; @property (readonly) double settlingDuration; @property (readonly) double perceptualDuration; @property (readonly) double bounce; + (id)defaultValueForKey:(id)a0; - (unsigned int)_propertyFlagsForLayer:(id)a0; - (BOOL)_setCARenderAnimation:(void *)a0 layer:(id)a1; - (float)_solveForInput:(float)a0; - (void *)_copyRenderAnimationForLayer:(id)a0; - (id)initWithPerceptualDuration:(double)a0 bounce:(double)a1; - (double)durationForEpsilon:(double)a0; - (double)_timeFunction:(double)a0; @end