docs: def most_recent_among(versions):
          """
          Compare a list of NSS versions and return the latest one.
          Uses first_older_than_second() for comparison.
          :param versions: an array of NSS version strings
          :return: verbatim copy of the most recent version string
          """
          latest = versions[0]
          for v in versions[1:]:
              if nssversion.first_older_than_second(latest, v):
                  latest = v
          return latest