private static void _anchor_removed(UnityARAnchorData anchor)
{
if (UnityARSessionNativeInterface.ARAnchorRemovedEvent != null)
{
ARPlaneAnchor planeAnchorFromAnchorData = GetPlaneAnchorFromAnchorData(anchor);
UnityARSessionNativeInterface.ARAnchorRemovedEvent(planeAnchorFromAnchorData);
}
}