/**
* Fetches the Singleton object
*
* @param string $class_name
*
* @return Yoast_GA_Admin_Custom_Dimensions
*/
public static function get_instance($class_name = __CLASS__)
{
if (is_null(self::$instance)) {
self::$instance = new $class_name();
}
return self::$instance;
}
/**
* Overrides instance to set with this class as class
*
* @param string $class_name
*
* @return Yoast_GA_Custom_Definitions
*/
public static function get_instance($class_name = __CLASS__)
{
return parent::get_instance($class_name);
}