WellCommerce\Bundle\OrderBundle\Entity\OrderInterface::getSessionId PHP Method

    public function getSessionId() : string;

 private function isOrderDirty(OrderInterface $order, string $currency, ClientInterface $client = null, string $sessionId) : bool
 {
     return $order->getClient() !== $client || $order->getCurrency() !== $currency || $order->getSessionId() !== $sessionId;
 }