title: How to copy attributes from the input CssSel
body: <pre><code>&lt;lift:sample.render&gt;
  &lt;ul class="my_ul"&gt;
  &lt;li class="my_li"&gt;&lt;sample:data /&gt;&lt;/li&gt;
  &lt;/ul&gt;
  &lt;/lift:sample.render&gt;
  
  // expected result is
  &lt;ul class="my_ul"&gt;
  &lt;li class="my_li"&gt;Data 1&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 2&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 3&lt;/li&gt;
  &lt;/ul&gt;
  &lt;ul class="my_ul"&gt;
  &lt;li class="my_li"&gt;Data 4&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 5&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 6&lt;/li&gt;
  &lt;/ul&gt;
  &lt;ul class="my_ul"&gt;
  &lt;li class="my_li"&gt;Data 7&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 8&lt;/li&gt;
  &lt;li class="my_li"&gt;Data 9&lt;/li&gt;
  &lt;/ul&gt;
  ......
  </code></pre>
  
  <ol>
  <li>I want to keep the attributes, so that the elements can display normal</li>
  <li>how can I generate data as above, given the source data is a list of String. (List[String]("data 1", "data 2", ...))</li>
  <li>Implement with LiftSnippet or CssSel</li>
  </ol>