I am trying to get all fields from a document to a `ListView`. I have tried foreach loop but it is not working. 

```
dbRef.collection("Shopkeeper Own Shops").document("Shopkeeper@gmail.com")
            .get()
            .addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
        @Override
        public void onSuccess(DocumentSnapshot documentSnapshot) {
            // Get all fields to a list
        }
    });

```