How to use the steampy.confirmation.Tag.CONF.value function in steampy

def test_confirmation_key(self):
        timestamp = 1470838334
        confirmation_key = guard.generate_confirmation_key(self.identity_secret, Tag.CONF.value, timestamp)
        self.assertEquals(confirmation_key, b'pWqjnkcwqni+t/n+5xXaEa0SGeA=')

def _fetch_confirmations_page(self) -> requests.Response:
        tag = Tag.CONF.value
        params = self._create_confirmation_params(tag)
        headers = {'X-Requested-With': 'com.valvesoftware.android.steam.community'}
        response = self._session.get(self.CONF_URL + '/conf', params=params, headers=headers)
        if 'Steam Guard Mobile Authenticator is providing incorrect Steam Guard codes.' in response.text:
            raise InvalidCredentials('Invalid Steam Guard file')
        return response