def _set_build_item(self, val):
        if self.game_item:
            self.log.critical('Trying to set build_item when game_item is set!')
            # raise Exception('Cannot set build_item AND game_item')
        else:
            self._build_item = val
Produce the "row processing" function for this :class:`.Bundle`.
dataset/ETHPy150Open shinymud/ShinyMUD/src/shinymud/models/item_types.py/ItemType._set_build_item--crossover with--dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/orm/query.py/Bundle.create_row_processor