def combiner_pre_filter(self):
        raise NotImplementedError

    ### Defining multi-step jobs ###
Converts the class into an actual view function that can be used
dataset/ETHPy150Open Yelp/mrjob/mrjob/job.py/MRJob.combiner_pre_filter--crossover with--dataset/ETHPy150Open baseblack/ReproWeb/3rdParty/python/flask/views.py/View.as_view