code: def old_properties_names_to_new(self):  # pragma: no cover, never called
          
          for i in itertools.chain(iter(list(self.items.values())),
                                   iter(list(self.templates.values()))):
              i.old_properties_names_to_new()
docs: Convert old Nagios2 names to Nagios3 new names
  
          TODO: still useful?
  
          :return: None