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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 _get_popularity_baseline(self):
 """ Returns a new popularity model matching the data set this model was trained with. Can be used for comparison purposes. """


        response = self.__proxy__.get_popularity_baseline()
        from .popularity_recommender import PopularityRecommender
        return PopularityRecommender(response)