def METHOD_NAME() -> None:
    if "encfs_root" not in os.environ:
        sys.stderr.write(
            "\nThis is not a standalone script and is not meant to be run independently.\n"
        )
        sys.stderr.write(
            "\nUsage: encfs --standard --extpass=./encfs_aes_getpass.py ~/.crypt ~/crypt\n"
        )
        sys.exit(1)
    devices = wait_for_devices()
    transport = choose_device(devices)
    client = TrezorClient(transport, ui=ClickUI())
    rootdir = os.environ["encfs_root"]  # Read "man encfs" for more
    passw_file = os.path.join(rootdir, "password.dat")
    if not os.path.exists(passw_file):
        # New encfs drive, let's generate password
        sys.stderr.write("Please provide label for new drive: ")
        label = input()
        sys.stderr.write("Computer asked Trezor for new strong password.\n")
        # 32 bytes, good for AES
        trezor_entropy = trezorlib.misc.get_entropy(client, 32)
        urandom_entropy = os.urandom(32)
        passw = hashlib.sha256(trezor_entropy + urandom_entropy).digest()
        if len(passw) != 32:
            raise ValueError("32 bytes password expected")
        bip32_path = Address([10, 0])
        passw_encrypted = trezorlib.misc.encrypt_keyvalue(
            client, bip32_path, label, passw, False, True
        )
        data = {
            "label": label,
            "bip32_path": bip32_path,
            "password_encrypted_hex": passw_encrypted.hex(),
        }
        json.dump(data, open(passw_file, "w"))
    # Let's load password
    data = json.load(open(passw_file, "r"))
    passw = trezorlib.misc.decrypt_keyvalue(
        client,
        data["bip32_path"],
        data["label"],
        bytes.fromhex(data["password_encrypted_hex"]),
        False,
        True,
    )
    print(passw)