.

    Args:
        add_node_names (bool, default True): Whether or not to set
            NodeProto.name. This makes no difference unless
            ``google_printer=True``.
        google_printer (bool, default False): If False, will return a custom,
            compact representation of the model. If True will return the
            protobuf's `Message::DebugString()`, which is more verbose.

    Returns:
        A UTF-8 str containing a human-readable representation of the ONNX model.
    N)