OptionalaggregatedFacility parts that are parts of this part (e.g multiple floor 3 in on different height that are in different parts of the building)
OptionalaggregatedSpaces that are part of the facility part
Type of facility part (e.g. IfcBuildingStorey)
OptionalelementUnique identifier for the facility part
OptionalnameOptionalproperty
Distinct part of the facility (e.g. storey or railway part)