getPromotionTotal() public method

public getPromotionTotal ( ) : string
return string
 /**
  * @Then /^the order's promotion total should(?:| still) be "([^"]+)"$/
  */
 public function theOrdersPromotionTotalShouldBe($promotionTotal)
 {
     $promotionTotalOnPage = $this->showPage->getPromotionTotal();
     Assert::eq($promotionTotalOnPage, $promotionTotal, 'Promotion total is %s, but should be %s.');
 }