UnityEditor.AnimationMode.StartAnimationMode C# (CSharp) Method

        public static extern void StartAnimationMode();
        internal static void StartAnimationPlaybackMode()

 public static void StartAnimationMode(Object[] objects)
 {
     Debug.LogWarning("AnimationUtility.StartAnimationMode is deprecated. Use AnimationMode.StartAnimationMode with the new APIs. The objects passed to this function will no longer be reverted automatically. See AnimationMode.AddPropertyModification");
     AnimationMode.StartAnimationMode();
 }