def test_validation_checking(self):

        nt.assert_raises(ValueError, Legend, orient='center')
returns the `field` part of this namespace, if any.
dataset/ETHPy150Open wrobstory/vincent/tests/test_vega.py/TestLegend.test_validation_checking--crossover with--dataset/ETHPy150Open datastore/datastore/datastore/core/key.py/Namespace.field