code: def _wrap_groups(groups, request):
      
      result = set()
      for g in groups:
          if g is SELF and is_authenticated(request):
              result.update(request.session.get('ws4redis:memberof', []))
          else:
              result.add(g)
      return result
docs: Returns a list of groups for the given list of groups and/or the current logged in user, if
      the list contains the magic item SELF.
      Note that this method bypasses Django's own group resolution, which requires a database query
      and thus is unsuitable for coroutines.
      Therefore the membership is takes from the session store, which is filled by a signal handler,
      while the users logs in.