title: How to upload multiple files using Webflux?
body: <p>How to upload multiple files using Webflux?</p>
  
  <p>I send request with content type: <code>multipart/form-data</code> and body contains one <strong>part</strong> which value is a set of files.</p>
  
  <p>To process single file I do it as follow: </p>
  
  <pre><code>Mono&lt;MultiValueMap&lt;String, Part&gt; body = request.body(toMultipartData());
  body.flatMap(map -&gt; FilePart part = (FilePart) map.toSingleValueMap().get("file"));
  </code></pre>
  
  <p>But how to done it for multiple files?</p>
  
  <p>PS. Is there another way to upload a set of files in webflux ?</p>