def NewAppInfo(self, appinfo):
    if self.backends:
      appinfo.backends = self.backends
      if self.IsBackend():
        appinfo.ApplyBackendSettings(self.backend_id)
Do vk login
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver_multiprocess.py/DevProcess.NewAppInfo--crossover with--dataset/ETHPy150Open prawn-cake/vk-requests/vk_requests/auth.py/AuthAPI.do_login