function define($object_name, $context = FALSE)
 {
     parent::define($context);
     $this->add_mixin('Mixin_GalleryStorage');
     $this->wrap('I_GalleryStorage_Driver', array(&$this, '_get_driver'), array($object_name, $context));
     $this->implement('I_Gallery_Storage');
 }
 function define($context)
 {
     parent::define($context);
     $this->add_mixin('Mixin_GalleryStorage_Driver_Base');
     $this->implement('I_GalleryStorage_Driver');
 }