code: def create_prj_model(self, ):
          
          prjs = djadapter.projects.all()
          rootdata = treemodel.ListItemData(['Name', 'Short', 'Rootpath'])
          prjroot = treemodel.TreeItem(rootdata)
          for prj in prjs:
              prjdata = djitemdata.ProjectItemData(prj)
              treemodel.TreeItem(prjdata, prjroot)
          prjmodel = treemodel.TreeModel(prjroot)
          return prjmodel
docs: Create and return a tree model that represents a list of projects
  
          :returns: the creeated model
          :rtype: :class:`jukeboxcore.gui.treemodel.TreeModel`
          :raises: None