def set_parameters(self, locations, credentials, app=None):
    if app is None:
      app = 'none'

    result = self.call(self.MAX_RETRIES, self.server.set_parameters, locations, 
      credentials, [app], self.secret)
    if result.startswith('Error'):
      raise AppControllerException(result)
Passes the given parameters to an AppController, allowing it to start
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/appcontroller_client.py/AppControllerClient.set_parameters