def get_default_urlfetch():
  if sys.modules.has_key('google.appengine.api.urlfetch'):
    return AppEngineUrlFetch()
  return UrlFetch()
Call all extension drivers during L3P update.
dataset/ETHPy150Open CollabQ/CollabQ/vendor/opensocial/http.py/get_default_urlfetch--crossover with--dataset/ETHPy150Open openstack/group-based-policy/gbpservice/neutron/services/grouppolicy/extension_manager.py/ExtensionManager.process_update_l3_policy