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

            AnimatorControllerPlayable.INTERNAL_CALL_CrossFadeInternal(ref handle, stateNameHash, transitionDuration, layer, normalizedTime);
        }
 private static void CrossFadeInternal(ref PlayableHandle handle, int stateNameHash, float transitionDuration, [DefaultValue("-1")] int layer, [DefaultValue("float.NegativeInfinity")] float normalizedTime)
 {
     AnimatorControllerPlayable.INTERNAL_CALL_CrossFadeInternal(ref handle, stateNameHash, transitionDuration, layer, normalizedTime);
 }