Comparing
#3 with
#4
Content
[...]
parent::init(); // DON'T Forget to call the parent method.
}
```
taked from
https://stackoverflow.com/questions/28575636/how-to-use-events-in-yii2
**Register an event handler at Class-Level**
To register event handlers at Class-Level a good place can be inside the bootstrap process.[...]
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