}

    private static String toMessage(ModelBuildingResult result) {
        if (result != null && !result.getModelIds().isEmpty()) {
            return toMessage(result.getModelIds().get(0), result.getProblems());
        }
        return null;
    }

    static String toMessage(String modelId, List<ModelProblem> problems) {
        StringWriter buffer = new StringWriter(1024);