validateStringNotEmpty(
                    "parent.artifactId", problems, Severity.FATAL, Version.BASE, parent.getArtifactId(), parent);

            if (equals(parent.getGroupId(), m.getGroupId()) && equals(parent.getArtifactId(), m.getArtifactId())) {
                addViolation(
                        problems,
                        Severity.FATAL,
                        Version.BASE,

        SimpleModelProblemCollector(ModelValidationResult result) {
            this.result = result;
        }

        public void add(ModelProblemCollectorRequest req) {
            if (!ModelProblem.Severity.WARNING.equals(req.getSeverity())) {
                result.addMessage(req.getMessage());
            }
        }
    }