def load_faiss_index(
        self,
        index_name: str,
        file: Union[str, PurePath],
        device: Optional[Union[int, List[int]]] = None,
        storage_options: Optional[Dict] = None,
    ):
        """Load a FaissIndex from disk.

        If you want to do additional configurations, you can have access to the faiss index object by doing
        `.get_index(index_name).faiss_index` to make it fit your needs.