Extract entity attributes on-demand from source buffer.
Returns globalId, name, description, objectType, tag mapped by schema name
(see extractRootAttributesFromEntity), so the result stays correct
for entity types whose attribute order differs from the IfcElement layout,
plus longName resolved in the model's own schema (IfcZone declares
LongName only from IFC4 on, so an IFC2X3 zone reads '').
This is used for entities that weren't fully parsed during initial load.
Extract entity attributes on-demand from source buffer. Returns globalId, name, description, objectType, tag mapped by schema name (see extractRootAttributesFromEntity), so the result stays correct for entity types whose attribute order differs from the IfcElement layout, plus
longNameresolved in the model's own schema (IfcZone declares LongName only from IFC4 on, so an IFC2X3 zone reads ''). This is used for entities that weren't fully parsed during initial load.