def render_config(config: Config, indent: str = "") -> str:
    new_indent = indent + "    "
    return "".join([
            "{\n",
            f'{new_indent}"type": "{config.typ3}",\n' if config.typ3 else '',
            "".join(_render(item, new_indent) for item in config.items),
            indent,
            "}\n"
    ])