code: protected function addPriceType($type)
      {
          if (is_null($this->pricingTickInfo)) {
              $this->pricingTickInfo = new PricingTickInfo();
          }
          if (is_null($this->pricingTickInfo->pricingTicketing)) {
              $this->pricingTickInfo->pricingTicketing = new PricingTicketing();
          }
  
          $this->pricingTickInfo->pricingTicketing->priceType[] = $type;
      }
docs: Add PriceType
  
  @param string $type