protected function getConfig()
    {
        // get default manager config used by default theme locator
        $config = $this->getServiceLocator()->get('config');
        if (isset($config['yima-theme']) && is_array($config['yima-theme'])) {
            $config = $config['yima-theme'];
        } else {
            $config = array();
        }

        return $config;
    }