def _download_smil(self, smil_url, video_id, fatal=True, transform_source=None):
    return self._download_xml(smil_url, video_id, 'Downloading SMIL file', 'Unable to download SMIL file', fatal=fatal, transform_source=transform_source)
def _download_smil(self, smil_url, video_id, fatal=True, transform_source=None):
    return self._download_xml(smil_url, video_id, 'Downloading SMIL file', 'Unable to download SMIL file', fatal=fatal, transform_source=transform_source)