/**
* Adds a helper
*
* @param AppHelper $helper Helper object
* @param string $alias Optional Helper alias
*
* @since 1.0.0
*/
public function addHelper($helper, $alias = null)
{
// add to helpers
$name = $helper->getName();
$this->_helpers[$name] = $helper;
// add alias
if (!empty($alias)) {
$this->_helpers[$alias] = $helper;
}
}