protected function determineOrderItemTaxes(ItemInterface $orderItem, array $pricesToBeTaxed, $pricingContext)
{
$rate = 0;
$taxes = array();
$totalTax = 0;
//We currently assume that all order items use the default tax zone and associated tax rate
$taxZone = $pricingContext->get('taxZone');
if (null != $taxZone) {
$rate = $taxZone->getDefaultRate();
}
//Each price which should be taxed is aggregated into one value, for instance shipment tax + sales tax
//This is especially true for flat rate taxes, but insufficient for mixed tax rates
foreach ($pricesToBeTaxed as $name => $value) {
$taxValue = $rate * $value / 100;
$totalTax += $taxValue;
}
$orderItem->setPrice('totalTax', $totalTax);
}
