title: How to describe multipart-form-data in swagger @Operation?
body: <p>There is an endpoint with request body of type <code>MULTIPART-FORM-DATA</code>, with three fields:</p>
  <ol>
  <li>&quot;my-attachment&quot; - <code>required</code> field of type <code>File</code></li>
  <li>&quot;options&quot; - <code>required</code> field of any type (<code>File</code> or <code>Text</code>)</li>
  <li>&quot;note&quot; - <code>optional</code> field of type <code>Text</code></li>
  </ol>
  <p>What is a proper way to describe this request body in Springdoc (or Swagger v3) using java annotations?</p>
  <p><em>I supposed that <code>@Operation</code> is eligible for this, but cannot find any appropriate way to use it.</em></p>
  <p><code>io.swagger.core.v3 - version 2.1.3</code></p>