def dispatch_request(self):
        raise NotImplementedError()
Is setting nulls with null-string representation allowed.
dataset/ETHPy150Open hhstore/flask-annotated/flask-0.7/flask/views.py/View.dispatch_request--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/ui/abstract_text_field.py/AbstractTextField.isNullSettingAllowed