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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def transition_effect(self, index, event_time, population_view):
 """Updates the simulation state and triggers any side-effects associated with entering this state. Parameters index : iterable of ints An iterable of integer labels for the simulants. event_time : pandas.Timestamp The time at which this transition occurs. population_view : `vivarium.framework.population.PopulationView` A view of the internal state of the simulation. """

        population_view.update(pd.Series(self.state_id, index=index))
        self._transition_side_effect(index, event_time)