private IfcExternalReferenceRelationship ( ) : System | ||
return | System |
IfcExternalReferenceRelationship::IfcExternalReferenceRelationship ( |
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IfcExternalReferenceRelationship::IfcExternalReferenceRelationship ( |
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IfcExternalReferenceRelationship::IfcExternalReferenceRelationship ( |