Accounting::calculateByItem

public function calculateByItem(Item $item): Accounting\Result
{
	if ($this->isResultCached($item))
	{
		return $this->getResultFromCache($item);
	}

	$productRows = $item->getProductRows() ? $item->getProductRows()->toArray() : [];
	$personTypeId = $this->resolvePersonTypeId($item);

	$locationId = null;
	if ($item->hasField(Item::FIELD_NAME_LOCATION_ID))
	{
		$locationId = $item->get(Item::FIELD_NAME_LOCATION_ID);
	}

	$result = Accounting\Result::initializeFromArray(
		$this->calculate($productRows, $item->getCurrencyId(), $personTypeId, $locationId)
	);

	$this->cacheResult($item, $result);

	return $result;
}