/**
  * Sets current area<br>
  * Usage: to setup of area what will operates next time
  * <li>Possible areas: frontend | admin
  *
  * @param string $area Area identifier ('admin'|'frontend')
  *
  * @return Mage_Selenium_TestCase
  */
 public function setArea($area)
 {
     self::$_area = $area;
     $this->_applicationHelper->setArea($area);
     return $this;
 }