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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:
 def discoverAuthEndpoints(authDomain, content=None, look_in={'name': 'link'}, test_urls=True, validateCerts=True, headers={}):
 """Find the authorization or redirect_uri endpoints for the given authDomain. Only scan html element matching all criteria in look_in. optionally the content to be scanned can be given as an argument. :param authDomain: the URL of the domain to handle :param content: the content to be scanned for the authorization endpoint :param look_in: dictionary with name, id and class_. only element matching all of these will be scanned :param test_urls: optional flag to test URLs for validation :param validateCerts: optional flag to enforce HTTPS certificates if present :param headers: optional headers to send with any request :rtype: list of authorization endpoints """

    if test_urls:
        ronkyuu.URLValidator(message='invalid domain URL')(authDomain)

    if content:
        result = {'status':   requests.codes.ok,
                  'headers':  None,
                  'content':  content
                  }
    else:
        r = requests.get(authDomain, verify=validateCerts, headers=headers)
        result = {'status':   r.status_code,
                  'headers':  r.headers
                  }
        # check for character encodings and use 'correct' data
        if 'charset' in r.headers.get('content-type', ''):
            result['content'] = r.text
        else:
            result['content'] = r.content

    result.update({'authorization_endpoint': set(), 'redirect_uri': set(), 'authDomain': authDomain})

    if result['status'] == requests.codes.ok:
        if 'link' in r.headers:
            all_links = r.headers['link'].split(',', 1)

            for link in all_links:
                if ';' in link:
                    link_parts = link.split(';')
                    for s in link_parts[1:]:
                        if 'rel=' in s:
                            href = link_parts[0].strip()
                            rel  = s.strip().replace('rel=', '').replace('"', '')
                            break
                    url = urlparse(href[1:-1])

                    if url.scheme in ('http', 'https') and rel in ('authorization_endpoint', 'redirect_uri'):
                        result[rel].add(url)

        all_links = BeautifulSoup(result['content'], _html_parser, parse_only=SoupStrainer(**look_in)).find_all('link')
        for link in all_links:
            rel = link.get('rel', None)[0]

            if rel in ('authorization_endpoint', 'redirect_uri'):
                href = link.get('href', None)
                if href:
                    url = urlparse(href)

                    if url.scheme in ('http', 'https'):
                        result[rel].add(url)
    return result