def METHOD_NAME(some_interdeps) -> None:
    """
    Test that a RunDescriber is json-dumped as version 2
    """
    idps_new = some_interdeps[0]
    idps_old = new_to_old(idps_new)
    new_desc = RunDescriber(idps_new)
    expected_json = json.dumps({'version': 3,
                                'interdependencies': idps_old._to_dict(),
                                'interdependencies_': idps_new._to_dict(),
                                'shapes': None})
    assert serial.to_json_for_storage(new_desc) == expected_json