def deserialize(
        self,
        x: str | None,
        save_dir: str | Path | None = None,
        root_url: str | None = None,
        hf_token: str | None = None,
    ) -> str | None:
        """
        Convert from serialized representation of a file (base64) to a human-friendly
        version (string filepath). Optionally, save the file to the directory specified by save_dir
        Parameters:
            x: Base64 representation of image to deserialize into a string filepath
            save_dir: Path to directory to save the deserialized image to
            root_url: Ignored
            hf_token: Ignored
        """
        if x is None or x == "":
            return None
        file = utils.decode_base64_to_file(x, dir=save_dir)
        return file.name

        Convert from serialized representation of a file (base64) to a human-friendly
        version (string filepath). Optionally, save the file to the directory specified by save_dir
        Parameters:
            x: Base64 representation of image to deserialize into a string filepath
            save_dir: Path to directory to save the deserialized image to
            root_url: Ignored
            hf_token: Ignored
        
client/python/gradio_client/serializing.py