title: Soap Custom XMl in Ruby with Savon
body: <p>I need the request body to look as such:</p>
  
  <pre><code>&lt;env:Body&gt;
  
  &lt;abc:request token="0" id="1" version="4"&gt;
  &lt;category domain_id="630643"/&gt;
  &lt;/abc&gt;
  
  &lt;/env:Body&gt;
  </code></pre>
  
  <p>How do I add the additional attributes to ?</p>
  
  <p>Additionally, how do you change the encoding from UTF-8 to UTF-16? Not able to find this in the documentation. </p>