i want "a9XvvHPEvhfDWTXe8HqPqWuP2gg1" this documentId collection list.

```
     FirebaseFirestore.instance
      .collection('tbl_FriendList').doc(
      'a9XvvHPEvhfDWTXe8HqPqWuP2gg1').get().then((event) {});

```

![enter image description here](https://i.stack.imgur.com/qqI65.png)