public function newPostValidator(): PostValidator
    {
        $postvalidator = new PostValidator();
        $postvalidator->validators->append(new Validators\TFDVersions());
        $postvalidator->validators->append(new Validators\Impuestos());
        $postvalidator->validators->append(new Validators\Fechas());
        $postvalidator->validators->append(new Validators\Conceptos());
        $postvalidator->validators->append(new Validators\Totales());
        $postvalidator->validators->append($this->newCertificadoValidator());
        return $postvalidator;
    }