title: loading elements with <object> tag in HtmlUnit
body: <p>I am loading a webpage which has lots of flash/gif elements embedded within <em>object</em> tags. I can see those elements in my browser, but I cannot reach them in HtmlUnit. </p>
  
  <pre><code>page.getByXPath("//object"); //gives empty result
  </code></pre>
  
  <p>waitForBackgroundJavaScript() doesn't help either.</p>
  
  <p>Anyone had the same problem before? Thanks!!</p>