/**
  * the singleton pattern
  *
  * @return HumanResources_Controller
  */
 public static function getInstance()
 {
     if (self::$_instance === NULL) {
         self::$_instance = new HumanResources_Controller();
     }
     return self::$_instance;
 }
 /**
  * Sets the config for HR
  * 
  * @param array $config
  */
 public function setConfig($config)
 {
     return HumanResources_Controller::getInstance()->setConfig($config);
 }