@Override
                    public void handleInformationResponse(final HttpResponse response) throws HttpException, IOException {
                        asyncExecCallback.handleInformationResponse(response);
                    }
Request execution handler in the asynchronous request execution chain
that is responsible for establishing connection to the target
origin server as specified by the current connection route.

@since 5.0
httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/AsyncConnectExec.java