def METHOD_NAME(self, download, seed):
    random.seed(seed)
    expected_size = random.choice([None, random.randint(0, 1000)])
    progress_indicator = random.choice([None, "some progress indicator"])
    net.download_from_bucket("s3", "s3://mybucket.opensearch.org/data/documents.json.bz2", "/tmp/documents.json.bz2",
                             expected_size, progress_indicator)
    download.assert_called_once_with("mybucket.opensearch.org", "data/documents.json.bz2",
                                     "/tmp/documents.json.bz2", expected_size, progress_indicator)