BasketBase::getVatRate

public function getVatRate()
{
	$vatRate = 0;

	/** @var BasketItemBase $basketItem */
	foreach ($this->collection as $basketItem)
	{
		// BasketItem that is removed is not involved
		if ($basketItem->getQuantity() == 0)
		{
			continue;
		}

		if ($basketItem->getVatRate() > $vatRate)
		{
			$vatRate = $basketItem->getVatRate();
		}
	}

	return $vatRate;
}