/**
* Set the total value of all items (sum of all items: $item->count * $item->price).
*
* @param $currency string ISO3 currency code
* @param $total string total value of all goods in $currency
* @return $this
*/
public function addTotal($currency, $total)
{
Preconditions::checkIso3Currency($currency, 'currency');
Preconditions::checkFloat($total, 'total');
$this->total[$currency] = $total;
return $this;
}
/**
* @param $currency string ISO3 currency code
* @param $price string price ofe item in specified currency
* @return $this
*/
public function addPrice($currency, $price)
{
Preconditions::checkIso3Currency($currency, 'currency');
Preconditions::checkFloat($price, 'price');
$this->price[$currency] = $price;
return $this;
}