def _update(self, response):
"""Update Operation instance with latest data from Speech API.
.. _speech_operations: https://cloud.google.com/speech/reference/\
rest/v1beta1/operations
:type response: dict
:param response: Response from Speech API Operations endpoint.
See: `speech_operations`_.
"""
metadata = response.get('metadata', None)
raw_results = response.get('response', {}).get('results', None)
results = []
if raw_results:
for result in raw_results[0]['alternatives']:
results.append(Transcript(result))
if metadata:
self._metadata = Metadata.from_api_repr(metadata)
self._results = results
self._complete = response.get('done', False)
