frontend\controllers\SiteController::behaviors PHP Method

    public function behaviors()
    {
        return ['access' => ['class' => AccessControl::className(), 'only' => ['logout', 'signup'], 'rules' => [['actions' => ['signup'], 'allow' => true, 'roles' => ['?']], ['actions' => ['logout'], 'allow' => true, 'roles' => ['@']]]], 'verbs' => ['class' => VerbFilter::className(), 'actions' => ['logout' => ['post']]]];
    }