def METHOD_NAME(self):
    self._version_map_blob.download_as_text.return_value = textwrap.dedent(
        """\
        nomulus-20200925-RC02,backend,nomulus-backend-v008
        nomulus-20200925-RC02,default,nomulus-default-v008
        """)
    self.assertEqual(
        self._client.get_versions_by_release(self._ENV,
                                             'nomulus-20200925-RC02'),
        frozenset([
            common.VersionKey('backend', 'nomulus-backend-v008'),
            common.VersionKey('default', 'nomulus-default-v008')
        ]))