title: How to get last redirect URL in Spring WebClient
body: <p>A client that follows redirects can be created as follows:</p>
  
  <pre><code>WebClient.builder()
                  .clientConnector(new ReactorClientHttpConnector(
                          HttpClient.create().followRedirect(true)
                  ))
  </code></pre>
  
  <p>After invoking a <code>HEAD</code> request on a URL, how can the final <code>Location</code> header be retrieved? In other words, how can we get the final URL redirected to?</p>