private function readTransacao(Transaction $transaction)
{
$transaction->setTid($this->getValue('//c:transacao/c:tid'));
$transaction->setPan($this->getValue('//c:transacao/c:pan'));
$transaction->setStatus($this->getValue('//c:transacao/c:status'));
$transaction->setAuthenticationURL($this->getValue('//c:transacao/c:url-autenticacao'));
}