rameters 

pretrained_model_name_or_path (str or os.PathLike, optional) —
Can be either:

A string, the model id of a model repo on huggingface.co. Valid model ids should have an
organization name, like google/ddpm-celebahq-256.
A path to a directory containing model weights saved using save_config(), e.g.,
./my_model_directory/.



cache_dir (Union[str, os.PathLike], optional) —
Path to a directory in which a downloaded pretrained model config