Sylius\Behat\Page\Admin\Order\ShowPageInterface::canCompleteOrderLastPayment PHP Метод

    public function canCompleteOrderLastPayment(OrderInterface $order);

 /**
  * @Then /^I should not be able to mark (this order) as paid again$/
  */
 public function iShouldNotBeAbleToFinalizeItsPayment(OrderInterface $order)
 {
     Assert::false($this->showPage->canCompleteOrderLastPayment($order), 'It should not have complete payment button.');
 }