/**
     * The collected problems.
     * @return a list of model problems encountered, never {@code null}
     */
    List<ModelProblem> getProblems();

    boolean hasErrors();

    boolean hasFatalErrors();

    default void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

    default void add(

        this.problems = result.getProblems();

        for (ModelProblem problem : this.problems) {
            severities.add(problem.getSeverity());
        }
    }

    public boolean hasFatalErrors() {
        return severities.contains(ModelProblem.Severity.FATAL);
    }

    public boolean hasErrors() {

            throw new IllegalStateException();
        }
    }

    protected boolean hasFatalErrors(ModelProblemCollectorExt problems) {
        if (problems instanceof DefaultModelProblemCollector) {
            return ((DefaultModelProblemCollector) problems).hasFatalErrors();
        } else {
            // the default execution path only knows the DefaultModelProblemCollector,