def cancel_spot_instance_requests(self, request_ids):
        params = {}
        if request_ids:
            self.build_list_params(params, request_ids, 'SpotInstanceRequestId')
        return self.get_list('CancelSpotInstanceRequests', params,
                             [('item', Instance)], verb='POST')
m.reduced() --> MatrixN
dataset/ETHPy150Open darcyliu/storyboard/boto/ec2/connection.py/EC2Connection.cancel_spot_instance_requests--crossover with--dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/util/arrays.py/MatrixN.reduced