def register_parts(self, parts):
        self.bulkReturnOrder = parts
        self._submit("bulkPartsRegistrationRequest",
                     "RegisterPartsForBulkReturn",
                     "bulkPartsRegistrationData")

        return self._req.objects
The Register Parts for Bulk Return API creates a bulk return for
dataset/ETHPy150Open filipp/py-gsxws/gsxws/returns.py/Return.register_parts