protected function _getConf()
    {
        // retrieve and cache config
        $services = $this->services();

        /** @var aSapi $config */
        $config   = $services->get('/sapi');
        $orig = $config   = $config->config();
        /** @var DataEntity $config */
        $config   = $config->get(\Module\Authorization\Module::CONF, array());

        if (!isset($config[self::CONF]) && !is_array($config[self::CONF]))
            return null;


        $config   = $config[self::CONF];
        return $config;
    }