scores.js

    String fetchScores = """
    subscription fetchScores {
      users(order_by: {score: desc}) {
        name
        score
      }
    }
    """;

Subscription(
          "fetchScores",
          fetchScores,
          builder: ({
            bool loading,
            dynamic payload,
            dynamic error,
          }) {
            if (payload != null) {
    … UI STAFF
          },
        ),