+ Mapping_EdgeMapping_NominalMassFlowAttribute = getResourceOrNull(graph, URIs.Mapping_EdgeMapping_NominalMassFlowAttribute);
+ Mapping_EdgeMapping_NominalMassFlowAttribute_Inverse = getResourceOrNull(graph, URIs.Mapping_EdgeMapping_NominalMassFlowAttribute_Inverse);
+ Mapping_EdgeMapping_OuterDiameterAttribute = getResourceOrNull(graph, URIs.Mapping_EdgeMapping_OuterDiameterAttribute);
+ Mapping_EdgeMapping_OuterDiameterAttribute_Inverse = getResourceOrNull(graph, URIs.Mapping_EdgeMapping_OuterDiameterAttribute_Inverse);