How to use the steampy.utils.account_id_to_steam_id function in steampy

def test_account_id_to_steam_id(self):
        account_id = '358617487'
        steam_id = utils.account_id_to_steam_id(account_id)
        self.assertEqual('76561198318883215', steam_id)

def test_make_offer_url(self):
        partner_account_id = '32384925'
        partner_token = '7vqRtBpC'
        sample_trade_url = 'https://steamcommunity.com/tradeoffer/new/?partner=' + partner_account_id + '&token=' + partner_token
        client = SteamClient(self.credentials.api_key)
        client.login(self.credentials.login, self.credentials.password, self.steam_guard_file)
        client._session.request('HEAD', 'http://steamcommunity.com')
        partner_steam_id = account_id_to_steam_id(partner_account_id)
        game = GameOptions.CS
        my_items = client.get_my_inventory(game, merge=False)['rgInventory']
        partner_items = client.get_partner_inventory(partner_steam_id, game, merge=False)['rgInventory']
        my_first_item = next(iter(my_items.values()))
        partner_first_item = next(iter(partner_items.values()))
        my_asset = Asset(my_first_item['id'], game)
        partner_asset = Asset(partner_first_item['id'], game)
        response = client.make_offer_with_url([my_asset], [partner_asset], sample_trade_url, 'TESTOWA OFERTA')
        self.assertIsNotNone(response)
        self.assertIn('tradeofferid', response.keys())

def fetch_messages(self) -> dict:
        message_list = {
            'sent': [],
            'received': []
        }
        events = self.poll_events()
        if not events:
            return message_list
        messages = events["messages"]
        for message in messages:
            text = message.get("text")
            if message['type'] == "saytext":
                accountid_from = account_id_to_steam_id(message.get("accountid_from"))
                message_list['received'].append({"partner": accountid_from, "message": text})
            elif message['type'] == "my_saytext":
                accountid_from = account_id_to_steam_id(message.get("accountid_from"))
                message_list['sent'].append({"partner": accountid_from, "message": text})
        return message_list

def make_offer_with_url(self, items_from_me: List[Asset], items_from_them: List[Asset],
                            trade_offer_url: str, message: str = '', case_sensitive: bool=True) -> dict:
        token = get_key_value_from_url(trade_offer_url, 'token', case_sensitive)
        partner_account_id = get_key_value_from_url(trade_offer_url, 'partner', case_sensitive)
        partner_steam_id = account_id_to_steam_id(partner_account_id)
        offer = self._create_offer_dict(items_from_me, items_from_them)
        session_id = self._get_session_id()
        url = SteamUrl.COMMUNITY_URL + '/tradeoffer/new/send'
        server_id = 1
        trade_offer_create_params = {'trade_offer_access_token': token}
        params = {
            'sessionid': session_id,
            'serverid': server_id,
            'partner': partner_steam_id,
            'tradeoffermessage': message,
            'json_tradeoffer': json.dumps(offer),
            'captcha': '',
            'trade_offer_create_params': json.dumps(trade_offer_create_params)
        }
        headers = {'Referer': SteamUrl.COMMUNITY_URL + urlparse.urlparse(trade_offer_url).path,
                   'Origin': SteamUrl.COMMUNITY_URL}