How to use the pooch.processors.ExtractorProcessor function in pooch

fnames = [
            os.path.join(path, fname)
            for path, _, files in os.walk(extract_dir)
            for fname in files
        ]
        return fnames

    def _extract_file(self, fname, extract_dir):
        """
        This method receives an argument for the archive to extract and the
        destination path. MUST BE IMPLEMENTED BY CHILD CLASSES.
        """
        raise NotImplementedError


class Unzip(ExtractorProcessor):  # pylint: disable=too-few-public-methods
    """
    Processor that unpacks a zip archive and returns a list of all files.

    Use with :meth:`pooch.Pooch.fetch` to unzip a downloaded data file into a
    folder in the local data store. :meth:`~pooch.Pooch.fetch` will return a
    list with the names of the unzipped files instead of the zip archive.

    The output folder is ``{fname}.unzip``.

    Parameters
    ----------
    members : list or None
        If None, will unpack all files in the zip archive. Otherwise, *members*
        must be a list of file names to unpack from the archive. Only these
        files will be unpacked.

)
                # Unpack all files from the archive into our new folder
                zip_file.extractall(path=extract_dir)
            else:
                for member in self.members:
                    get_logger().info(
                        "Extracting '%s' from '%s' to '%s'", member, fname, extract_dir
                    )
                    # Extract the data file from within the archive
                    with zip_file.open(member) as data_file:
                        # Save it to our desired file name
                        with open(os.path.join(extract_dir, member), "wb") as output:
                            output.write(data_file.read())


class Untar(ExtractorProcessor):  # pylint: disable=too-few-public-methods
    """
    Processor that unpacks a tar archive and returns a list of all files.

    Use with :meth:`pooch.Pooch.fetch` to untar a downloaded data file into a
    folder in the local data store. :meth:`~pooch.Pooch.fetch` will return a
    list with the names of the extracted files instead of the archive.

    The output folder is ``{fname}.untar``.


    Parameters
    ----------
    members : list or None
        If None, will unpack all files in the archive. Otherwise, *members*
        must be a list of file names to unpack from the archive. Only these
        files will be unpacked.