backend\controllers\Controller::behaviors PHP Method

    public function behaviors()
    {
        return ['access' => ['class' => AccessControl::className(), 'rules' => [['allow' => true, 'roles' => ['@']]]]];
    }

 public function behaviors()
 {
     $behavior = parent::behaviors();
     $access = $behavior['access'];
     return ['access' => $access, 'verbs' => ['class' => VerbFilter::className(), 'actions' => ['delete' => ['post']]]];
 }