docs: def clear_allow_repeat_items(self):
          """reset allow repeat itmes to default value"""
          if (self.get_allow_repeat_items_metadata().is_read_only() or
                  self.get_allow_repeat_items_metadata().is_required()):
              raise NoAccess()
          self.my_osid_object_form._my_map['allowRepeatItems'] = \
              bool(self._allow_repeat_items_metadata['default_boolean_values'][0])