/**
  * Calculate tax details for quote item with given quantity
  *
  * @param QuoteDetailsItemInterface $item
  * @param int $quantity
  * @param bool $round
  * @return TaxDetailsItemInterface
  */
 public function calculate(QuoteDetailsItemInterface $item, $quantity, $round = true)
 {
     if ($item->getTaxIncluded()) {
         return $this->calculateWithTaxInPrice($item, $quantity, $round);
     } else {
         return $this->calculateWithTaxNotInPrice($item, $quantity, $round);
     }
 }