def METHOD_NAME(light_scenarios: List[LightScenario], filename: str):
    """
    Save a list of LightInstance to a jsonl file where each line represents a LightScenario object.
    """
    with open(filename, "a") as f:
        for light_scenario in light_scenarios:
            f.write(json.dumps(asdict_without_nones(light_scenario), ensure_ascii=False) + "\n")