*
     * @param model The model whose duplicate elements should be merged, must not be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */

                .orElse(null);
    }

    private String getVersion(Model model) {
        String version = model.getVersion();
        if (version == null && model.getParent() != null) {
            version = model.getParent().getVersion();
        }
        return version;
    }

    void put(Path pomFile, Model model) {
        modelsByPath.put(pomFile, model);
        modelsByGa

    }

    static String getGroupId(Model model) {
        String groupId = model.getGroupId();
        if (groupId == null && model.getParent() != null) {
            groupId = model.getParent().getGroupId();
        }
        return groupId;
    }

    private String getVersion(Model model) {
        String version = model.getVersion();
        if (version == null && model.getParent() != null) {

        }
    }

    @Override
    public Model injectDefaultValues(Model model, ModelBuilderRequest request, ModelProblemCollector problems) {
        Model.Builder builder = Model.newBuilder(model);

        builder.dependencies(injectList(model.getDependencies(), this::injectDependency));
        Build build = model.getBuild();
        if (build != null) {

import java.util.Map;

import org.apache.maven.api.Language;
import org.apache.maven.api.model.DependencyManagement;
import org.apache.maven.api.model.DistributionManagement;
import org.apache.maven.api.model.License;
import org.apache.maven.api.model.Model;
import org.apache.maven.api.model.Prerequisites;
import org.apache.maven.api.model.Repository;
import org.apache.maven.api.services.RepositoryFactory;

     */
    @Deprecated
    Model interpolate(Model project, Map<String, ?> context) throws ModelInterpolationException;

    /**
     * @deprecated Use {@link ModelInterpolator#interpolate(Model, File, ProjectBuilderConfiguration, boolean)} instead.
     */
    @Deprecated

import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.PluginContainer;
import org.apache.maven.api.model.PluginExecution;
import org.apache.maven.api.model.PluginManagement;
import org.apache.maven.lifecycle.LifeCyclePluginAnalyzer;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblem.Severity;
import org.apache.maven.model.building.ModelProblem.Version;

     *
     * @param model The model whose URLs should be normalized, may be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.
     */
    Model normalize(Model model, ModelBuilderRequest request);

import org.apache.maven.api.model.ModelBase;
import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.PluginContainer;
import org.apache.maven.api.model.Profile;
import org.apache.maven.api.model.ReportPlugin;
import org.apache.maven.api.model.Reporting;
import org.apache.maven.model.v4.MavenMerger;

/**
 * As long as Maven controls the BuildPomXMLFilter, the entities that need merging are known.

import org.apache.maven.api.model.Model;
import org.apache.maven.api.model.Parent;
import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.PluginExecution;
import org.apache.maven.api.model.PluginManagement;
import org.apache.maven.api.model.Profile;
import org.apache.maven.api.model.ReportPlugin;
import org.apache.maven.api.model.Reporting;
import org.apache.maven.api.model.Repository;