code: public function actionLogin()
      {
          $this->params['model'] = $model = new LoginForm();
          if ($model->load($_POST) && $model->login()) {
              //Yii::$app->response->redirect = Yii::$app->getUser()->getReturnUrl();
              Yii::$app->session->setFlash('delayed-instructions', json_encode(['pauseTimer' => false]));
  
              return $this->goBack();
          } else {
              Yii::$app->response->task = 'dialog';
              Yii::$app->response->taskOptions = ['title' => 'Log In'];
              Yii::$app->response->view = 'login';
              Yii::$app->response->baseInstructions['pauseTimer'] = true;
          }
      }
docs: [[@doctodo method_description:actionLogin]].
  
  @return [[@doctodo return_type:actionLogin]] [[@doctodo return_description:actionLogin]]