WebXRInterfaceReferenceSpaceType Property

The reference space type (from the list of requested types set in the RequestedReferenceSpaceTypes property), that was ultimately used by Initialize when setting up the WebXR session.

Possible values come from WebXR's XRReferenceSpaceType. If you want to use a particular reference space type, it must be listed in either RequiredFeatures or OptionalFeatures.