static HttpClient apacheHttp_trustingClient() {
  final SSLContext sslContext = new SSLContextBuilder()
    .loadTrustMaterial(null, (x509CertChain, authType) -> true)
    .build();

  return HttpClientBuilder.create()
    .setSSLContext(sslContext)
    .setConnectionManager(
            new PoolingHttpClientConnectionManager(
                    RegistryBuilder.<ConnectionSocketFactory>create()
                            .register("http", PlainConnectionSocketFactory.INSTANCE)
                            .register("https", new SSLConnectionSocketFactory(sslContext,
                                    NoopHostnameVerifier.INSTANCE))
                            .build()
            ))
    .build();
}