/** * Obtain a reference on a unique common_ext_ExtensionsManager * class instance. * * @access public * @author Joel Bout, <*****@*****.**> * @return common_ext_ExtensionsManager */ public static function singleton() { $returnValue = null; if (!isset(self::$instance)) { self::$instance = new self(); } $returnValue = self::$instance; return $returnValue; }