List<Dependency> dependencies,
            String prefix,
            String prefix2,
            ModelBuildingRequest request) {
        Severity errOn30 = getSeverity(request, ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_0);
        Severity errOn31 = getSeverity(request, ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_1);

        Map<String, Dependency> index = new HashMap<>();

        return new DefaultTransformerContextBuilder(this);
    }

    @Override
    public ModelBuildingResult build(ModelBuildingRequest request) throws ModelBuildingException {
        return build(request, new LinkedHashSet<>());
    }

    protected ModelBuildingResult build(ModelBuildingRequest request, Collection<String> importIds)
            throws ModelBuildingException {
        // phase 1

            modelBuildingRequest.activeProfileIds(request.getActiveProfileIds());
            modelBuildingRequest.inactiveProfileIds(request.getInactiveProfileIds());
            modelBuildingRequest.systemProperties(toMap(request.getSystemProperties()));
            modelBuildingRequest.userProperties(toMap(request.getUserProperties()));
            // bv4: modelBuildingRequest.setBuildStartTime(request.getBuildStartTime());

        config.setUserProperties(userProperties);
        config.setValidationLevel(
                lenientValidation
                        ? ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_2_0
                        : ModelBuildingRequest.VALIDATION_LEVEL_STRICT);

        DefaultRepositorySystemSession repoSession = MavenTestHelper.createSession(repositorySystem);
        LocalRepository localRepo =