code: public function init()
      {
          parent::init();
          $this->itemFile = Yii::getAlias($this->itemFile);
          $this->assignmentFile = Yii::getAlias($this->assignmentFile);
          $this->ruleFile = Yii::getAlias($this->ruleFile);
          $this->load();
      }
docs: Initializes the application component.
  This method overrides parent implementation by loading the authorization data
  from PHP script.