def add_choice_id(self, choice_id, inline_region):
        """stub"""
        if inline_region in self.my_osid_object_form._my_map['inlineRegions']:
            self.my_osid_object_form._my_map['inlineRegions'][inline_region]['choiceIds'].append(choice_id)
        else:
            raise IllegalState('that inline region is invalid')