public function getCustomAreaStyles()
    {
        if (!isset($this->customAreaStyles)) {
            $app = Facade::getFacadeApplication();
            $db = $app->make('database')->connection();
            $r = $db->fetchAll('select issID, arHandle from CollectionVersionAreaStyles where cID = ? and cvID = ?', array(
                $this->getCollectionID(),
                $this->cvID,
            ));
            $this->customAreaStyles = array();
            foreach ($r as $styles) {
                $this->customAreaStyles[$styles['arHandle']] = $styles['issID'];
            }
        }

        return $this->customAreaStyles;
    }