Added model for View Submission payload. The existing model assumes that callbak id will never come, so null is always set for the callback id field. Not sure the reason for such implementation, but a callback id can be sent in view submission. I didn't want to change the existing model to return Optional for the callback id in order to not break exisying code.
Added model for View Submission payload. The existing model assumes that callbak id will never come, so for the callback id in order to not break exisying code.
nullis always set for the callback id field. Not sure the reason for such implementation, but a callback id can be sent in view submission. I didn't want to change the existing model to return Optional