How to use the pyicloud.base.PyiCloudSession function in pyicloud

self._home_endpoint = 'https://www.icloud.com'
        self._setup_endpoint = 'https://setup.icloud.com/setup/ws/1'

        self._base_login_url = '%s/login' % self._setup_endpoint

        if cookie_directory:
            self._cookie_directory = os.path.expanduser(
                os.path.normpath(cookie_directory)
            )
        else:
            self._cookie_directory = os.path.join(
                tempfile.gettempdir(),
                'pyicloud',
            )

        self.session = PyiCloudSession(self)
        self.session.verify = verify
        self.session.headers.update({
            'Origin': self._home_endpoint,
            'Referer': '%s/' % self._home_endpoint,
            'User-Agent': 'Opera/9.52 (X11; Linux i686; U; en)'
        })

        cookiejar_path = self._get_cookiejar_path()
        self.session.cookies = cookielib.LWPCookieJar(filename=cookiejar_path)
        if os.path.exists(cookiejar_path):
            try:
                self.session.cookies.load()
                logger.debug("Read cookies from %s", cookiejar_path)
            except:
                # Most likely a pickled cookiejar from earlier versions.
                # The cookiejar will get replaced with a valid one after

def __init__(self, service):
        self.service = service
        super(PyiCloudSession, self).__init__()