def GetLatestReceiptInfo(self):
    if 'latest_receipt_info' in self.response:
      return self.response['latest_receipt_info']
    elif 'latest_expired_receipt_info' in self.response:
      return self.response['latest_expired_receipt_info']
    else:
      return self.response['receipt']
Add one more instruction to the dataform.
dataset/ETHPy150Open viewfinderco/viewfinder/backend/services/itunes_store.py/VerifyResponse.GetLatestReceiptInfo--crossover with--dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/xmpp/protocol.py/DataForm.addInstructions