public function getBehavior($behavior, $config = array())
    {
        if (is_string($behavior)) {
            if (strpos($behavior, '.') === false) {
                $identifier = clone $this->getIdentifier();
                $identifier->path = array('controller','behavior');
                $identifier->name = $behavior;
                register_default(array(
                    'identifier' => $identifier, 
                    'prefix' => $this
                ));
                $behavior = $identifier;
            }
        }

        return parent::getBehavior($behavior, $config);
    }