This should only be used for normal Spatial Anchors, use OnSharedSpatialAnchorsLoadCompleted for the Shared Spatial Anchor loaded event.

Use the OnAnchorCreateCompleted event to be notified when this operation is complete. Once the instantiation completed you can retrieve the OVRSpatialAnchor from the OnAnchorCreateCompleted callback. For more information, see Creating a New Spatial Anchor.

Use the OnAnchorsLoadCompleted event to be notified when this operation is complete.

It'll collect the uuid(s) of the instantiated OVRSpatialAnchor(s) and erase them. Use the OnAnchorsEraseAllCompleted event to be notified when this operation is complete. /remarks>

Use the OnAnchorEraseCompleted event to be notified when this operation is completed.