def reducer(self, key, values):
        raise NotImplementedError
Send an e-mail to the user requeted to be an admin.
dataset/ETHPy150Open Yelp/mrjob/mrjob/job.py/MRJob.reducer--crossover with--dataset/ETHPy150Open fp7-ofelia/ocf/optin_manager/src/python/openflow/optin_manager/admin_manager/helper.py/send_admin_req_approve_or_reject_email