code: protected Certificate loadCertificate() throws VectorPrintException {
        try {
           return CertificateHelper.loadCertificate(getValue(CERTIFICATE, URL.class).openStream());
        } catch (IOException | CertificateException ex) {
           throw new VectorPrintException(ex);
        }
     }
docs: loads a certificate using {@link CertificateHelper#loadCertificate(java.io.InputStream) }
  
  @return
  @throws VectorPrintException