Base::setPageByType

public function setPageByType($type)
{
	$registry = Registry::getRegistry();
	$page = isset($registry[$type]) ? $registry[$type]:null;

	if(is_null($page))
	{
		throw new ArgumentException("Unsupported cmd type: {$type}");
	}

	$this->setPage($page);
	return $this;
}