//Artefact:ModelClass /com /sphenon /modelling /uml /UMLExternalType

//Artefact:ModelAttribute /com /sphenon /modelling /uml /UMLExternalType /FullName

//Artefact:ModelAttribute /com /sphenon /modelling /uml /UMLExternalType /Type

//Artefact:ModelOperation /com /sphenon /modelling /uml /UMLExternalType /isA(UMLType):boolean