protected function trailer()
{
$this->iniciaTrailer();
$this->add(1, 1, '9');
$this->add(2, 2, '1');
$this->add(3, 5, $this->getCodigoBanco());
$this->add(6, 10, $this->getConta());
$this->add(11, 394, '');
$this->add(395, 400, Util::formatCnab('9', $this->getCount(), 6));
return $this;
}