def members(self):
        """
        Return a list of all users in this organization. Users are identified
        by their login name. Note that this is computed from the teams in the
        organization, because GitHub does not currently offer a WebHook for
        organization membership, so converting org membership would lead to
        stale data.
        """
        allmembers = set()
        for team in self.teams():
            allmembers.update(team.members())
        return sorted(allmembers)