title: HttpUrl queryParameters into MultiValuedMap<String, String>
body: <p>I am trying to populate the query params of HttpUrl into MultiValuedMap.</p>
  
  <p>I have been able to convert to a Map. Is there a way to convert the Map> into the desired MultiValuedMap?</p>
  
  <pre><code>    HttpUrl url = request.url();
      Map&lt;String, List&lt;String&gt;&gt; queryParams =
          request.url().queryParameterNames().stream()
              .collect(Collectors.toMap(name -&gt; name, name -&gt; url.queryParameterValues(name)));
  </code></pre>