/**
* Apply adjustment amount and return result value
*
* @param float $amount
* @param SaleableInterface $saleableItem
* @return float
*/
public function applyAdjustment($amount, SaleableInterface $saleableItem)
{
$includingTax = !$this->taxHelper->priceIncludesTax();
return $this->taxHelper->getPriceUnrounded($saleableItem, $amount, $includingTax);
}
