In dart, i want to get a firestore document and that document has a field ‘products’ which is a list of maps, i want to save that list locally, edit it(user will edit using interface) then when the user is finished replace the original list with the updated one :

initDetails() async {
    companyDetails() async {
      var data = await FirebaseFirestore.instance
          .collection("Plugs")
          .doc(widget.useruid)
          .get();
      Map<String, dynamic> finalData = data.data()!;
      return finalData;
    }

    await companyDetails().then((value) => setState(() {
          companyData = value;
          plugDocId = companyData.data.id;
          editableInventory = companyData["products"];
          companyName.text = companyData["name"];
          companyLogo = companyData["logo"];
          operation = companyData["o"];
          fee = companyData["fee"];
        }));
  }

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      initDetails();
    });
  }

when i set the editiable inventory to late i get errors surrounding its initialization and when i set it to a empty list, the data is not showing up/updating, and it seems like no data is reaching the client.