for (String parentId : parentIds) {
                    message.append(parentId).append(" -> ");
                }
                message.append(parentData.id());

                problems.add(Severity.FATAL, ModelProblem.Version.BASE, message.toString());

                throw problems.newModelBuilderException();
            } else {
                currentData = parentData;
            }
        }

                    e,
                    "Non-parseable toolchains " + toolchainsSource.getLocation() + ": " + e.getMessage(),
                    BuilderProblem.Severity.FATAL));
            return PersistedToolchains.newInstance();
        } catch (IOException e) {
            problems.add(new DefaultBuilderProblem(
                    toolchainsSource.getLocation(),
                    -1,

                    loc != null ? loc.getColumnNumber() : -1,
                    e,
                    "Non-parseable settings " + settingsSource.getLocation() + ": " + e.getMessage(),
                    BuilderProblem.Severity.FATAL));
            return Settings.newInstance();
        } catch (IOException e) {
            problems.add(new DefaultBuilderProblem(
                    settingsSource.getLocation(),
                    -1,

        } catch (Graph.CycleDetectedException e) {
            problems.add(new DefaultModelProblem(
                    "Cycle detected between models at " + from + " and " + p,
                    ModelProblem.Severity.FATAL,
                    null,
                    null,
                    0,
                    0,
                    null,
                    e));
            return false;
        }
    }

        }
    }

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

    public boolean hasErrors() {
        return severities.contains(ModelProblem.Severity.ERROR) || severities.contains(ModelProblem.Severity.FATAL);
    }

    @Override
    public List<ModelProblem> getProblems() {
        return problems;
    }

        if (parent != null) {
            validateStringNotEmpty(
                    "parent.groupId", problems, Severity.FATAL, Version.BASE, parent.getGroupId(), parent);

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

        for (ModelProblem input : problems) {
            if (input.getSeverity().equals(Severity.ERROR)
                    || input.getSeverity().equals(Severity.FATAL)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Class definition
     */
    private final boolean errors;