internal static void UpdateMeshHandles(bool selectionOrVertexCountChanged = true)
        {
            if (!s_Instance)
            {
                return;
            }

            try
            {
                EditorMeshHandles.RebuildSelectedHandles(MeshSelection.topInternal, selectMode);
            }
            catch
            {
                // happens on undo when c++ object is gone but c# isn't in the know
                EditorMeshHandles.ClearHandles();
            }
        }