Mapping = getResourceOrNull(graph, URIs.Mapping);
MappingParameterType = getResourceOrNull(graph, URIs.MappingParameterType);
Mapping_Base = getResourceOrNull(graph, URIs.Mapping_Base);
Mapping = getResourceOrNull(graph, URIs.Mapping);
MappingParameterType = getResourceOrNull(graph, URIs.MappingParameterType);
Mapping_Base = getResourceOrNull(graph, URIs.Mapping_Base);