title: HTMLUnit : super slow execution?
body: <p>I have been using HTMLUnit . It suits my requirements well. But it seems to be extremely slow.
  for example : I have automated the following scenario using HTMLUnit</p>
  
  <pre><code>Goto Google page
  Enter some text
  Click on the search button
  Get the title of the results page
  Click on the first result.
  </code></pre>
  
  <p>Code :</p>
  
  <pre><code>long t1=System.currentTimeMillis();
  Logger logger=Logger.getLogger("");
  logger.setLevel(Level.OFF);
  WebClient webClient=createWebClient();
  WebRequest webReq=new WebRequest(new URL("http://google.lk"));
  
  HtmlPage googleMainPage=webClient.getPage(webReq);
  HtmlTextInput searchTextField=(HtmlTextInput) googleMainPage.getByXPath("//input[@name='q']").get(0);
  HtmlButton searchButton=(HtmlButton) googleMainPage.getByXPath("//button[@name='btnK']").get(0);
  
  searchTextField.type("Sri Lanka");
  System.out.println("Text typed!");
  HtmlPage googleResultsPage= searchButton.click();
  System.out.println("Search button clicked!");
  
  System.out.println("Title : " + googleResultsPage.getTitleText());
  
  HtmlAnchor firstResultLink=(HtmlAnchor) googleResultsPage.getByXPath("//a[@class='l']").get(0);
  HtmlPage firstResultPage=firstResultLink.click();
  System.out.println("First result clicked!");
  
  System.out.println("Title : " + firstResultPage.getTitleText());
  //System.out.println(firstResultPage.asText());
  long t2=System.currentTimeMillis();
  long diff=t2-t1;
  System.out.println("Time elapsed : "  + milliSecondsToHrsMinutesAndSeconds(diff));
  
  webClient.closeAllWindows();
  </code></pre>
  
  <p>It works 100% well. But it takes  3 minutes,41 seconds</p>
  
  <p>I guess the reason for the slow execution is validating each and every element on the page. </p>
  
  <p>My question is how to reduce the execution time of HTMLUnit ? is there any way to disable validations on webpages.</p>
  
  <p>Thanks in advance!</p>