private void initChildrens(ICPBrasilCertificate cert) {
        if ((cert.getBasicConstraints() != null && !cert.getBasicConstraints().isCA()) || cert.getBasicConstraints() == null) {
            return;
        }
        ICPBrasilCACertificate ca = (ICPBrasilCACertificate) cert;
        try {
            for (ICPBrasilCertificate c : ca.getChildren()) {
                this.add(new CertificateTreeNode(c));
            }
        }
        catch (SQLException ex) {
            Logger.getLogger(CertificateTreeNode.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (CertificateException ex) {
            Logger.getLogger(CertificateTreeNode.class.getName()).log(Level.SEVERE, null, ex);
        }
        catch (IOException ex) {
            Logger.getLogger(CertificateTreeNode.class.getName()).log(Level.SEVERE, null, ex);
        }
    }