/**
* Get Invoice total ny number
*
* @param integer $no
* @param boolean $vat
* @return float
*/
public function total($no, $vat = false)
{
$handle = $this->getHandle($no);
$request = ['invoiceHandle' => $handle];
if ($vat) {
return $this->client->Invoice_GetGrossAmount($request)->Invoice_GetGrossAmountResult;
}
return $this->client->Invoice_GetNetAmount($request)->Invoice_GetNetAmountResult;
}
