def test_flatten_empty_list(self):
        self.assertEqual([], list(flatten([])))
This adds waiter state commands to the subcommand table passed in.
dataset/ETHPy150Open duerrp/pyexperiment/tests/test_functional.py/TestFlatten.test_flatten_empty_list--crossover with--dataset/ETHPy150Open aws/aws-cli/awscli/customizations/waiters.py/WaiterStateCommandBuilder.build_all_waiter_state_cmds