API Reference > OdIfc4x1 Namespace > Classes > IfcBuildingSystem Class > IfcBuildingSystem Methods > unsetAttr Method > IfcBuildingSystem::unsetAttr Method (OdIfc::OdIfcAttribute)
IfcBuildingSystem::unsetAttr Method (OdIfc::OdIfcAttribute)
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Syntax
C++
virtual void unsetAttr(const OdIfc::OdIfcAttribute explicitAttrDef);
Group
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