t3_ARPlaneManager_2_0_1.cs

private void OnAnchorsRemoved(AnchorsArgs args)
{
    foreach (var anchor in args.Anchors)
    {
        if (anchor.AnchorType != AnchorType.Plane)
            continue;

        //Destroy(_planeLookup[anchor.Identifier]);
        //_planeLookup.Remove(anchor.Identifier);
    }
}