docs: def get_targets(self, config):
          """ Given an Entry object, return all of the outgoing links. """
  
          return {urllib.parse.urljoin(self.url, attrs['href'])
                  for attrs in self._targets
                  if self._check_rel(attrs, config.rel_whitelist, config.rel_blacklist)
                  and self._domain_differs(attrs['href'])}