private function getWalker(ReplaceInsertTagsEvent $event)
    {
        $identifier = $event->getParam(0);

        if (!isset(static::$walkers[$identifier])) {
            list($columnSetId, $infinite) = $this->translateParams($event);

            try {
                static::$walkers[$identifier] = new Walker(Factory::createById($columnSetId), false, $infinite);
            } catch (\Exception $e) {
                return null;
            }
        }

        return static::$walkers[$identifier];
    }
private function getWalker(ReplaceInsertTagsEvent $event)
    {
        $identifier = $event->getParam(0);

        if (!isset(static::$walkers[$identifier])) {
            list($columnSetId, $infinite) = $this->translateParams($event);

            try {
                static::$walkers[$identifier] = new Walker(Factory::createById($columnSetId), false, $infinite);
            } catch (\Exception $e) {
                return null;
            }
        }

        return static::$walkers[$identifier];
    }
private function getWalker ( ReplaceInsertTagsEvent $ event ) { $ identifier = $ event -> getParam ( 0 ) ; if ( ! isset ( static :: $ walkers [ $ identifier ] ) ) { list ( $ columnSetId , $ infinite ) = $ this -> translateParams ( $ event ) ; try { static :: $ walkers [ $ identifier ] = new Walker ( Factory :: createById ( $ columnSetId ) , false , $ infinite ) ; } catch ( \ Exception $ e ) { return null ; } } return static :: $ walkers [ $ identifier ] ; }
Get a walker for the subscribed event.

@param ReplaceInsertTagsEvent $event The subscribed event.

@return Walker|null
Get a walker for the subscribed event .