post https://api.gett.com/api/v1/rex_ride/order//cancel
Cancel order by driver. This method is allowed during order states Confirmed and Waiting. When state is Waiting - the cancellation is only allowed after allowed Waiting time. The response will return if the operation was successful and if not the reason of failure (ReachedLimit|NotAllowedForOrder|NotAllowedForStatus|CancelNotPermitted|CancelNotPermittedYet).