/**
  * getPluginLoader
  * @return Zend_Loader_PluginLoader
  */
 private static function getPluginLoader()
 {
     if (null === self::$objPluginLoader) {
         self::$objPluginLoader = new Zend_Loader_PluginLoader(array('Client' => GLOBAL_ROOT_PATH . 'client/plugins/'));
     }
     return self::$objPluginLoader;
 }