}

    return result[0] as X509KeyManager
  }

  private fun newEmptyKeyStore(keyStoreType: String?): KeyStore =
    KeyStore.getInstance(keyStoreType ?: KeyStore.getDefaultType()).apply {
      val inputStream: InputStream? = null // By convention, 'null' creates an empty key store.
      load(inputStream, password)
    }

    server.run();
  }

  private static SSLContext sslContext(String keystoreFile, String password)
      throws GeneralSecurityException, IOException {
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    try (InputStream in = new FileInputStream(keystoreFile)) {
      keystore.load(in, password.toCharArray());
    }
    KeyManagerFactory keyManagerFactory =