docs: private PoolingHttpClientConnectionManager createConnectionMgr() {
          PoolingHttpClientConnectionManager connectionMgr;
  
          // prepare SSLContext
          SSLContext sslContext = buildSslContext();
          ConnectionSocketFactory plainsf = PlainConnectionSocketFactory.getSocketFactory();
          // we allow to disable host name verification against CA certificate,
          // notice: in general this is insecure and should be avoided in production,
          // (this type of configuration is useful for development purposes)
          boolean noHostVerification = false;
          LayeredConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                  sslContext,
                  noHostVerification ? NoopHostnameVerifier.INSTANCE : new DefaultHostnameVerifier()
          );
          Registry<ConnectionSocketFactory> r = RegistryBuilder.<ConnectionSocketFactory>create()
                  .register("http", plainsf)
                  .register("https", sslsf)
                  .build();
          connectionMgr = new PoolingHttpClientConnectionManager(r, null, null,
                  null, connectionPoolTimeToLive, TimeUnit.SECONDS);
  
          connectionMgr.setMaxTotal(maxConnectionsTotal);
          connectionMgr.setDefaultMaxPerRoute(maxConnectionsPerRoute);
          HttpHost localhost = new HttpHost("localhost", 80);
          connectionMgr.setMaxPerRoute(new HttpRoute(localhost), maxConnectionsPerRoute);
          return connectionMgr;
      }