def has_default(self):
        return self._default is not NOT_PROVIDED
if we have pdc_url and smtp_uri, configure sendmail plugin,
dataset/ETHPy150Open hzlf/openbroadcast/website/apps/tastypie__/fields.py/ApiField.has_default--crossover with--dataset/ETHPy150Open projectatomic/osbs-client/osbs/build/build_request.py/ProductionBuild.render_sendmail