Only listen for folder additions or deletions, but not file additions or deletions ?

Only listen for folder additions or deletions, but not file additions or deletions ?

![30121666259493_ pic](https://user-images.githubusercontent.com/26895243/196916939-15a3e449-4287-4a68-a9bb-07db22edf434.jpg)

```
only watch aaa folder  
not watch bbb and ccc.txt
```