+ Edge_HasLength = getResourceOrNull(graph, URIs.Edge_HasLength);
+ Edge_HasLength_Inverse = getResourceOrNull(graph, URIs.Edge_HasLength_Inverse);
+ Edge_HasNominalMassFlow = getResourceOrNull(graph, URIs.Edge_HasNominalMassFlow);
+ Edge_HasNominalMassFlow_Inverse = getResourceOrNull(graph, URIs.Edge_HasNominalMassFlow_Inverse);
+ Edge_HasOuterDiameter = getResourceOrNull(graph, URIs.Edge_HasOuterDiameter);
+ Edge_HasOuterDiameter_Inverse = getResourceOrNull(graph, URIs.Edge_HasOuterDiameter_Inverse);