private function initHelper()
    {
        if (!$this->isConfigFileSet()) {
            throw new Exception("The main config file wasn't defined.");
        }
        if (!$this->isAppRootSet()) {
            throw new Exception("The application root wasn't defined.");
        }
        AppHelper::getInstance()
            ->setAppRoot($this->getAppRoot())
            ->setConfigFile($this->getConfigFile())
            ->run();
    }