BasketItemBase::changeCurrency

public function changeCurrency(string $currency): MainResult
{
	$result = new MainResult();

	$oldCurrency = $this->getCurrency();
	if ($oldCurrency === $currency)
	{
		return $result;
	}

	$result->addErrors(
		$this->setField('CURRENCY', $currency)->getErrors()
	);

	return $result;
}