code: def setup_users_page(self, ):
          
          self.users_tablev.horizontalHeader().setResizeMode(QtGui.QHeaderView.ResizeToContents)
          log.debug("Loading users for users page.")
          rootdata = treemodel.ListItemData(['Username', 'First', 'Last', 'Email'])
          rootitem = treemodel.TreeItem(rootdata)
          users = djadapter.users.all()
          for usr in users:
              usrdata = djitemdata.UserItemData(usr)
              treemodel.TreeItem(usrdata, rootitem)
          self.users_model = treemodel.TreeModel(rootitem)
          self.users_tablev.setModel(self.users_model)
docs: Create and set the model on the users page
  
          :returns: None
          :rtype: None
          :raises: None