@collective
    def dump(self, filename):
        base._trace.evaluate(set([self]), set())
        vwr = PETSc.Viewer().createBinary(filename, PETSc.Viewer.Mode.WRITE)
        self.vec.view(vwr)
Create an operator class with a comment
dataset/ETHPy150Open OP2/PyOP2/pyop2/petsc_base.py/Dat.dump--crossover with--dataset/ETHPy150Open perseas/Pyrseas/tests/dbobject/test_operclass.py/OperatorClassToSqlTestCase.test_operclass_with_comment