EdgeMappingParameterType = getResourceOrNull(graph, URIs.EdgeMappingParameterType);
Edge_HasDiameter = getResourceOrNull(graph, URIs.Edge_HasDiameter);
Edge_HasDiameter_Inverse = getResourceOrNull(graph, URIs.Edge_HasDiameter_Inverse);
EdgeMappingParameterType = getResourceOrNull(graph, URIs.EdgeMappingParameterType);
Edge_HasDiameter = getResourceOrNull(graph, URIs.Edge_HasDiameter);
Edge_HasDiameter_Inverse = getResourceOrNull(graph, URIs.Edge_HasDiameter_Inverse);