public static function calculate($base, TaxRateInterface $rate)
{
if ($rate->isIncludedInPrice()) {
return $base - $base / (1 + $rate->getAmount());
}
return $base * $rate->getAmount();
}
public function transform(TaxRateInterface $taxRate)
{
return array('id' => $taxRate->id, 'category' => $taxRate->category, 'amount' => $taxRate->getAmount(), 'percentage' => $taxRate->getAmountAsPercentage(), 'included_in_price' => (bool) $taxRate->isIncludedInPrice());
}