'Calling the same flow should raise.'

def testThrottle(self):

    args = flow_plugin.ApiStartRobotGetFilesOperationArgs(hostname='Host', paths=['/test'])
    self.handler.Handle(args, token=self.token)
    with self.assertRaises(throttle.ErrorFlowDuplicate):
        self.handler.Handle(args, token=self.token)
