UnityEngine.Canvas.SendWillRenderCanvases C# (CSharp) Method

        private static void SendWillRenderCanvases()
        {
            if (willRenderCanvases != null)
            {
                willRenderCanvases();
            }
        }

 public static void ForceUpdateCanvases()
 {
     Canvas.SendWillRenderCanvases();
 }