Wrap divs from div parent
<p>I have this code </p>

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="superdiv"&gt;
  &lt;div&gt;&lt;/div&gt;
  &lt;div&gt;&lt;/div&gt;
&lt;/div&gt;</code></pre>
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</p>

<p>I want to wrap all <code>.superdiv</code> children divs into a div called <code>&lt;div class="subdiv"&gt;&lt;/div&gt;</code></p>

<p>How can I make that ?</p>

<p>Thanks</p>