protected function _getClassName($class)
    {
        $class = Str::low($class);
        list ($plugin, $className) = pluginSplit($class);
        $return = self::HELPER_SUFFIX . '\\' . Inflector::camelize($className) . self::HELPER_SUFFIX;
        if ($plugin !== null) {
            return Inflector::camelize($plugin) . '\\' . $return;
        }

        return Configure::read('App.namespace') . '\\' . $return;
    }