}

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

    // Package protected for test
    static String toMessage(String modelId, List<ModelProblem> problems) {

        super(toMessage(goal, pluginDescriptor));

        this.goal = goal;
        this.pluginDescriptor = pluginDescriptor;
    }

    public String getGoal() {
        return goal;
    }

    public PluginDescriptor getPluginDescriptor() {
        return pluginDescriptor;
    }

    private static String toMessage(String goal, PluginDescriptor pluginDescriptor) {

     *
     * @param problems The problems that cause this exception, must not be {@code null}.
     */
    public ToolchainsBuildingException(List<Problem> problems) {
        super(toMessage(problems));

        this.problems = new ArrayList<>();
        if (problems != null) {
            this.problems.addAll(problems);
        }
    }

    /**

     *
     * @param problems The problems that cause this exception, may be {@code null}.
     */
    public SettingsBuildingException(List<SettingsProblem> problems) {
        super(toMessage(problems));

        this.problems = new ArrayList<>();
        if (problems != null) {
            this.problems.addAll(problems);
        }
    }

    /**

        DefaultModelProblem pb2 =
                new DefaultModelProblem("message2", ModelProblem.Severity.ERROR, null, "source", 0, 0, "modelId", null);
        String msg = ModelBuildingException.toMessage("modelId", Arrays.asList(pb1, pb2));
        assertEquals(
                "2 problems were encountered while building the effective model for modelId" + System.lineSeparator()