def get_dev_output_names(self):
        raise NotImplementedError()
Return the PRIMARY KEY for the first row of the table.
dataset/ETHPy150Open adieu/django-mediagenerator/mediagenerator/base.py/Generator.get_dev_output_names--crossover with--dataset/ETHPy150Open google/mysql-tools/pylib/range_lib.py/PrimaryKeyRange.GetFirstPrimaryKeyValue