How to use the trezor.utils.chunks function in trezor

signature=unhexlify('30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'),
                serialized_tx=unhexlify('010000000182488650ef25a58fef6788bd71b8212038d7f2bbe4750bc7bcb44701e85ef6d5000000006b4830450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede7810121023230848585885f63803a0a8aecdd6538792d5c539215c91698e315bf0253b43dffffffff'))),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(request_type=TXFINISHED, details=None, serialized=TxRequestSerializedType(
                signature_index=None,
                signature=None,
                serialized_tx=unhexlify('0160cc0500000000001976a914de9b2a8da088824e8fe51debea566617d851537888ac00000000'),
            )),
        ]

        seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
        root = bip32.from_seed(seed, 'secp256k1')

        signer = signing.sign_tx(tx, root)

        for request, response in chunks(messages, 2):
            res = signer.send(request)
            self.assertEqualEx(res, response)

        with self.assertRaises(StopIteration):
            signer.send(None)

TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(bin_outputs=[pout1])),
            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin_bitcoin),
            True,
            signing.UiConfirmTotal(300000 + 90000, 90000, coin_bitcoin),
            True,
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
        ]

        seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
        root = bip32.from_seed(seed, 'secp256k1')

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)

def split(text):
    return utils.chunks(text, 17)

def split_proposal(proposal):
    return chunks(proposal, 17)

def split_address(address):
    return chunks(address, 18)

def split_address(address):
    return chunks(address, 18)

def split_data(data):
    return chunks(data, 18)

async def require_confirm_sign_identity(ctx, identity, challenge_visual):
    lines = []
    if challenge_visual:
        lines.append(challenge_visual)

    lines.append(ui.MONO)
    lines.extend(chunks(serialize_identity_without_proto(identity), 18))

    proto = identity.proto.upper() if identity.proto else "identity"
    text = Text("Sign %s" % proto)
    text.normal(*lines)
    await require_confirm(ctx, text)

def split_address(address: str) -> Iterable[str]:
    return chunks(address, 17)