if "description" in item_def:
            item_description = cast(str, item_def["description"]).split("\f")[0]
            item_def["description"] = item_description
    new_mapping, new_definitions = _remap_definitions_and_field_mappings(
        model_name_map=model_name_map,
        definitions=definitions,  # type: ignore[arg-type]
        field_mapping=field_mapping,
    )
    return new_mapping, new_definitions