I want to display the no. of documents in collection in Realtime.[In image 4 document][1]
[1]: https://i.stack.imgur.com/VLiDy.jpg

```js
 countDocuments() async {
    QuerySnapshot _myDoc = await collectionReference.get();
    List myDocCount = _myDoc.docs;
    var totalStudent = myDocCount.length.toString();
    return print(totalStudent);
  }
```

In above code when I called countDocument() function in raised button or any button type it print the total document present in collection in DEBUG CONSOLE of VS code BUT **I want to display this No. in inside of Scaffold's Text() widget**.
So, how I Can display.