def instances(self, filter={}):
        #return [ opus.lib.prov.Instance(...), ...]
        raise NotImplementedError()
Test _GetFieldsFromSequence().
dataset/ETHPy150Open bmbouter/Opus/opus/lib/prov/driver_base.py/DriverBase.instances--crossover with--dataset/ETHPy150Open google/simian/src/tests/simian/auth/x509_test.py/X509CertificateTest.testGetFieldsFromSequenceWhenWrongVersion