How to use the textworld.agents.WalkthroughAgent function in textworld

nb_objects = rng.randint(0, 20)
        quest_length = rng.randint(2, 5)
        quest_breadth = rng.randint(3, 7)
        game_seed = rng.randint(0, 65365)

        with make_temp_directory(prefix="test_play_generated_games") as tmpdir:
            options = textworld.GameOptions()
            options.nb_rooms = world_size
            options.nb_objects = nb_objects
            options.quest_length = quest_length
            options.quest_breadth = quest_breadth
            options.seeds = game_seed
            game_file, game = textworld.make(options, path=tmpdir)

            # Solve the game using WalkthroughAgent.
            agent = textworld.agents.WalkthroughAgent()
            textworld.play(game_file, agent=agent, silent=True)

            # Play the game using RandomAgent and make sure we can always finish the
            # game by following the winning policy.
            env = textworld.start(game_file)

            agent = textworld.agents.RandomCommandAgent()
            agent.reset(env)
            env.compute_intermediate_reward()

            env.seed(4321)
            game_state = env.reset()

            max_steps = 100
            reward = 0
            done = False

def test_making_a_game_using_basic_theme():
    with make_temp_directory(prefix="test_tw-make") as tmpdir:
        output_folder = pjoin(tmpdir, "gen_games")
        game_file = pjoin(output_folder, "game_1234.ulx")
        command = ["tw-make", "custom", "--theme", "basic", "--seed", "1234", "--output", game_file]
        assert check_call(command) == 0

        # Solve the game using WalkthroughAgent.
        agent = textworld.agents.WalkthroughAgent()
        textworld.play(game_file, agent=agent, silent=True)