A typed property value as stored in a Pset Y.Map.
We store these as plain JSON values (not Y.Maps) because the property value is replaced atomically; partial updates to the typed shape are not meaningful at the IFC level.
Optional
Provenance: 'manual' | 'bsdd:' | 'derived' | 'ifcx:'.
A typed property value as stored in a Pset Y.Map.
We store these as plain JSON values (not Y.Maps) because the property value is replaced atomically; partial updates to the typed shape are not meaningful at the IFC level.