Download all SWF slides.

        The location of the slides files are returned.

        A DownloadError is raised if at least one of the slides cannot be download..

def download_slides(self):
        """ Download all SWF slides.

        The location of the slides files are returned.

        A DownloadError is raised if at least one of the slides cannot be download..
        """
        return self.presentation.client.download_all(self.presentation.metadata['slides'], self.tmp_dir)