async def METHOD_NAME(client):
    max_date = deserialize_datetime("9999-12-31T23:59:59.999999Z")
    dt = deserialize_iso(await client.datetime.get_utc_uppercase_max_date_time7_digits())
    assert dt == max_date
    with pytest.raises(Exception):
        # Python doesn't support 7 digits
        await client.datetime.put_utc_max_date_time7_digits(max_date)