API Reference > OdIfc4x3_rc4 Namespace > Classes > IfcLightDistributionDataSourceSelect Class > IfcLightDistributionDataSourceSelect Methods > IfcLightDistributionDataSourceSelect::isIfcExternalReference Method
IfcLightDistributionDataSourceSelect::isIfcExternalReference Method
Syntax
C++
bool isIfcExternalReference();
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