def finalize(self, ctx, shard_state):
    raise NotImplementedError("finalize() not implemented in %s" %
                              self.__class__)
Initialize all valid properties.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/output_writers.py/OutputWriter.finalize--crossover with--dataset/ETHPy150Open smart-on-fhir/client-py/fhirclient/models/subscription.py/Subscription.__init__