Overview

          OOModels contains Artefacts                                             Artefacts have a Type
          (they are organised in Namespaces)                   (and other metadata)
                                                                                  e.g. WIML or XMI
          Artefact:Model
             org
               oomodels
                 sandbox
                   business
                     foundation
                       entities
                         Company
                         Person
                         Name
                         ...