def METHOD_NAME(config: ConfigDict, section: str) -> Dict[str, Union[str, Dict[str, str]]]:
    """
    Get all subsections from a config (e.g. config["data_sources"])
    """
    result: Dict[str, Union[str, Dict[str, str]]] = cast(
        Dict[str, Union[str, Dict[str, str]]], config.get(section, {})
    )
    assert isinstance(result, dict)
    return result