def METHOD_NAME(link: str, session: Session = None):
    if session:
        headers = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0"}
        response = session.get(link, headers=headers)
        Crawler.cached_links[link] = response
        return response
    else:
        return Crawler.cached_links[link]