def mutate(self, candidate):
        return None or candidate
An observer which updates the proxy with state change.
dataset/ETHPy150Open clips/pattern/pattern/vector/__init__.py/GeneticAlgorithm.mutate--crossover with--dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/date_selector.py/DateSelector._update_proxy