* ```
 */
fun String.decodeCertificatePem(): X509Certificate {
  try {
    val certificateFactory = CertificateFactory.getInstance("X.509")
    val certificates =
      certificateFactory
        .generateCertificates(
          Buffer().writeUtf8(this).inputStream(),
        )

    return certificates.single() as X509Certificate
  } catch (nsee: NoSuchElementException) {

              "-----END CERTIFICATE-----";

      CertificateFactory cf = CertificateFactory.getInstance("X.509");
      Certificate isgCertificate = cf.generateCertificate(new ByteArrayInputStream(isgCert.getBytes("UTF-8")));

      HandshakeCertificates certificates = new HandshakeCertificates.Builder()
              .addTrustedCertificate((X509Certificate) isgCertificate)

            }
            try (final InputStream in = new FileInputStream(authorities)) {
                final Certificate certificate = CertificateFactory.getInstance("X.509").generateCertificate(in);

                final KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
                keyStore.load(null, null);
                keyStore.setCertificateEntry("server", certificate);