/**
* PHP unset magic method.
* This is a PHP magic method that we override to allow using unset() to set a config key to be null.
*
* @param string $name the property name or the event name
* @return mixed
*/
public function __unset($name)
{
if (isset($this->_configs[$name])) {
$this->setConfig($name, null);
} else {
parent::__unset($name);
}
}
