get all data from a firestore subcollection flutter

I want to get all the data in a firestore subcollection.

This is how my firestore collection looks like:

The collection Products has a product with a field productName. I

I can display the list name by accesing the snapshot data

CloudShoppingListsCart.fromSnapshot(QueryDocumentSnapshot<Map<String, dynamic>> snapshot, this.products)
  : shoppingListId = snapshot.id,
    name = snapshot.data()['name'] as String;

but is there a way to access the collection products and his fields like I did in snapshot.data()?

The method where I call fromSnapshot is this:

Stream<Iterable<CloudShoppingListsCart>> getShoppingCartListDetails({required String shoppingCartListId}){

final shoppingList = FirebaseFirestore.instance.collection(shoppingListCollectionName)
    .doc(shoppingCartListId).collection(shoppingListCartCollectionName).snapshots().map((event) =>
    event.docs
        .map((doc) => CloudShoppingListsCart.fromSnapshot(doc, [])));

return shoppingList;

I want to get the product name for displaying it in a ListTile like this

return ListTile(
  leading: const Icon(Icons.list),
  trailing: const Text(
     "GFG",
     style: TextStyle(color: Colors.green, fontSize: 15),),

  title: Text('List item $productsName'));

I am already displaying the list name in a column.

Thanks in advance.