5.4.2.22 IfcSpatialReferenceSelect
5.4.2.22.1 Semantic definition
IfcSpatialReferenceSelect provides the option to either select a group occurrence, IfcGroup (and all relevant subtypes), or a product occurrence, IfcProduct, for referencing to a spatial element.
5.4.2.22.2 Type values
5.4.2.22.3 Formal representation
TYPE IfcSpatialReferenceSelect = SELECT (IfcGroup ,IfcProduct); END_TYPE;