private void listFunctions(HttpRequest request, Model model, Cursor cursor) {
        Cursor functions = cursor.setArray("functions");
        for (ExpressionFunction func : model.functions()) {
            Cursor function = functions.addObject();
            listFunctionDetails(request, model, new String[] { func.getName() }, function);
        }
    }
A dash in this key ensures it does not collide with feature names
model-evaluation/src/main/java/ai/vespa/models/handler/ModelsEvaluationHandler.java