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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def zip(self, destination: typing.Union[str, Path] = None, encode: bool = True) -> str: """ Write mission, dictionary etc. to a MIZ file Args: destination: target MIZ file (if none, defaults to source MIZ + "_EMIZ" Returns: destination file """

        if encode:
            self._encode()

        if destination is None:
            destination_path = self.miz_path.parent.joinpath(f'{self.miz_path.stem}_EMIZ.miz')
        else:
            destination_path = elib.path.ensure_file(destination, must_exist=False)

        LOGGER.debug('zipping mission to: %s', destination_path)

        destination_path.write_bytes(dummy_miz)

        with ZipFile(str(destination_path), mode='w', compression=8) as zip_file:

            for root, _, items in os.walk(self.temp_dir.absolute()):
                for item in items:
                    item_abs_path = Path(root, item).absolute()
                    item_rel_path = Path(item_abs_path).relative_to(self.temp_dir)
                    zip_file.write(item_abs_path, arcname=item_rel_path)

        return str(destination_path)