code: private static Provider getAppEngineProvider() {
      try {
        // Forcibly load conscrypt as it is unlikely to be an installed provider on AppEngine
        return (Provider) Class.forName("org.conscrypt.OpenSSLProvider")
            .getConstructor().newInstance();
      } catch (Throwable t) {
        throw new RuntimeException("Unable to load conscrypt security provider", t);
      }
    }
docs: Forcibly load the conscrypt security provider on AppEngine if it's available. If not fail.