private static void UpdateEditorCurves(AnimationClip clip, List <EditorCurveBinding> bindings, List <AnimationCurve> curves)
 {
     if (curves.Count != 0)
     {
         for (int i = 0; i < curves.Count; i++)
         {
             CurveEditUtility.UpdateEditorCurve(clip, bindings[i], curves[i]);
         }
         EditorUtility.SetDirty(clip);
     }
 }