def METHOD_NAME(self):
    actual = gho.GithubObject._makeTimestampAttribute(None)
    self.assertEqual(gho._ValuedAttribute, type(actual))
    self.assertIsNone(actual.value)
    actual = gho.GithubObject._makeTimestampAttribute(1611405296)
    self.assertEqual(gho._ValuedAttribute, type(actual))
    self.assertEqual(datetime(2021, 1, 23, 12, 34, 56, tzinfo=timezone.utc), actual.value)