def METHOD_NAME(asgi_connection: Request[Any, Any, Any]) -> None:
    config = DTOConfig(rename_fields={"a": "z"})
    DataclassDTO._dto_backends = {}
    dto_type = DataclassDTO[Annotated[Model, config]]
    dto_type.create_for_field_definition(FieldDefinition.from_kwarg(Model, name="data"), handler_id="handler_id")
    field_definitions = dto_type._dto_backends["handler_id"]["data_backend"].parsed_field_definitions  # pyright: ignore
    assert field_definitions[0].serialization_name == "z"