[`~transformers.PreTrainedModel.save_pretrained`], e.g.,
`./my_model_directory/`.
- `None` if you are both providing the configuration and state
dictionary (resp. with keyword arguments `config` and
`state_dict`).
force_download (`bool`, *optional*, defaults to `False`):
Whether to force the (re-)download of the model weights and
configuration files, overriding the cached versions if they exist.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, e.g.,