langchain/document_loaders/unstructured.py/UnstructuredFileLoader/__init__
class UnstructuredFileLoader:    def __init__(
        self,
        file_path: Union[str, List[str]],
        mode: str = "single",
        **unstructured_kwargs: Any,
    ):
        """Initialize with file path."""
        self.file_path = file_path
        super().__init__(mode=mode, **unstructured_kwargs)