Overview

          OOModels contains Artefacts                                             Artefacts have a Type
                                                                                  (and other metadata)
                                                                                  e.g. WIML or XMI
          Artefact:Model
             org
               oomodels
                 sandbox
                   business
                     foundation
                       entities
                         Company                               Artefacts can be downloaded
                         Person                               during download, they can be converted
                         Name                                    into another format
                         ...
          Artefacts are organised in Namespaces,
          and they belong to a Domain