@classmethod
    def _get_model_by_node_id(cls, node_id):
        return db().query(NodeVolumes).filter_by(node_id=node_id).first()
Test that __str__ (or printing) a dataset works
dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/extensions/volume_manager/objects/volumes.py/VolumeObject._get_model_by_node_id--crossover with--dataset/ETHPy150Open Unidata/siphon/siphon/cdmr/tests/test_dataset.py/test_print