def METHOD_NAME(self):
    if self.access_token and self.refresh_token:
        return
    cookies = self._get_cookies('https://www.tennistv.com/')
    if not cookies.get('access_token') or not cookies.get('refresh_token'):
        self.raise_login_required()
    self.access_token, self.refresh_token = cookies['access_token'].value, cookies['refresh_token'].value