Sylius\Behat\Page\Admin\Order\ShowPageInterface::completeOrderLastPayment PHP Method

    public function completeOrderLastPayment(OrderInterface $order);

 /**
  * @When /^I mark (this order) as paid$/
  */
 public function iMarkThisOrderAsAPaid(OrderInterface $order)
 {
     $this->showPage->completeOrderLastPayment($order);
 }