code: protected function isTaxationUpdateNeeded(SaleInterface $sale)
      {
          // TODO (Order) Abort if "completed" and not "has changed for completed"
  
          // TODO Get tax resolution mode. (by invoice/delivery/origin).
  
          if ($this->persistenceHelper->isChanged($sale, ['taxExempt', 'customer', 'vatValid'])) {
              return true;
          }
  
          return $this->didDeliveryCountryChanged($sale);
      }
docs: Returns whether or not the taxation adjustments should be updated.
  
  @param SaleInterface $sale
  
  @return bool