A SET or BAG (read as a list), not a single ref.
The entity that declares the inverse, e.g. IfcObject.
The referencing entity type before FOR; its subtypes count too.
The attribute of entity after FOR, e.g. RelatedObjects.
The declared lower bound; 1 for a single-valued inverse.
The declared name in the schema's spelling, e.g. IsDefinedBy.
OptionalupperThe declared upper bound, undefined for ?.
One
INVERSEattribute of an entity, fromIfcModel.inverseAttributeNames.