YII2 where does the code for Beforelogin in this class execute when the User.php class comes with the framework? Need to write for yourself?

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Where is the code executed after the specific trigger

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This has triggered ...
Where is the code executed after the specific trigger

If you do not User::EVENT_BEFORE_LOGIN mount the handler, it will not be triggered.

Update

Use Case 1

Yii::$app->getUser()->on(User::EVENT_AFTER_LGOIN, function($event){ va_dump($event);});....Yii::$app->getUser()->login($user);

Use Case 2

use yii\base\Event;use yii\web\User;Event::on(User::className(), User::EVENT_AFTER_LOGIN, function($event) {    var_dump($event);});

Specific reference documents: Https://github.com/yiisoft/yii2/blob/master/docs/guide/concept-events ....

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