title: Karate API Converting String from JSON Response into UPPERCASE
body: <p>JSON Response has __typename in the response.
  I am defining and storing it so I can use this in the next graphQL Request</p>
  <ul>
  <li>def contentType1 = response.data.getPublicList.items[0].__typename</li>
  </ul>
  <p>__typename comes back as &quot;Movie&quot;</p>
  <p>The next Request requires &quot;Movie&quot; to be &quot;MOVIE&quot;
  query {
  getContentById(id: &quot;&quot;, contentType: &quot;MOVIE&quot;) {</p>
  <p>Is there a way I can convert/define the entire string value as UPPERCASE?</p>