5.1.2.6 IfcPropertySetDefinitionSet
5.1.2.6.1 Semantic definition
The purpose of this defined type is enabling the assignment of a set of IfcPropertySetDefinition's to an IfcRelDefinesByProperties relationship.
5.1.2.6.2 Formal representation
TYPE IfcPropertySetDefinitionSet = SET [1:?] OF IfcPropertySetDefinition;
END_TYPE;