def b08(res, req, resp):
    auth = res.is_authorized(req, resp)
    if auth is True:
        return True
    elif isinstance(auth, basestring):
        resp["WWW-Authenticate"] = auth
    return False
Always returns EmptyQuerySet.
dataset/ETHPy150Open benoitc/dj-webmachine/webmachine/decisions.py/b08--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/query.py/EmptyQuerySet.complex_filter