private static void PlayInFixedTimeInternal(ref PlayableHandle handle, int stateNameHash)
        {
            float fixedTime = float.NegativeInfinity;
            int   layer     = -1;

            AnimatorControllerPlayable.INTERNAL_CALL_PlayInFixedTimeInternal(ref handle, stateNameHash, layer, fixedTime);
        }
 private static void PlayInFixedTimeInternal(ref PlayableHandle handle, int stateNameHash, [DefaultValue("-1")] int layer, [DefaultValue("float.NegativeInfinity")] float fixedTime)
 {
     AnimatorControllerPlayable.INTERNAL_CALL_PlayInFixedTimeInternal(ref handle, stateNameHash, layer, fixedTime);
 }