/**
* Return amount (with tax) of all deposits invoices used by invoice
*
* @return int <0 if KO, Sum of deposits amount otherwise
*/
function getSumDepositsUsed()
{
require_once DOL_DOCUMENT_ROOT . '/core/class/discount.class.php';
$discountstatic = new DiscountAbsolute($this->db);
$result = $discountstatic->getSumDepositsUsed($this);
if ($result >= 0) {
return $result;
} else {
$this->error = $discountstatic->error;
return -1;
}
}
