@Test
    void testMergeModel_ModelVersion() {
        Model parent = Model.newBuilder().modelVersion("4.0.0").build();
        Model model = Model.newInstance();
        Model.Builder builder = Model.newBuilder(model);
        modelMerger.mergeModel_ModelVersion(builder, model, parent, false, null);
        assertNull(builder.build().getModelVersion());

        model = Model.newBuilder().modelVersion("5.0.0").build();

     *
     * @return The assembled model, never {@code null}.
     */
    @Nonnull
    Model getEffectiveModel();

    /**
     * Gets the specified raw model as it was read from a model source. Apart from basic validation, a raw model has not
     * undergone any updates by the model builder, e.g. reflects neither inheritance nor interpolation. The model

                .computeIfAbsent(profiles, l -> doInjectProfiles(model, profiles));
        return result == KEY ? model : result;
    }

    private Model doInjectProfiles(Model model, List<Profile> profiles) {
        Model orgModel = model;
        for (Profile profile : profiles) {
            if (profile != null) {

     */
    default Model injectProfile(
            Model model, Profile profile, ModelBuilderRequest request, ModelProblemCollector problems) {
        return injectProfiles(model, List.of(profile), request, problems);
    }

    /**
     * Merges values from the specified profile into the given model. Implementations are expected to keep the profile

 */
package org.apache.maven.internal.impl.model;

import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.ModelSource;

/**
 * Holds a model along with some auxiliary information. This internal utility class assists the model builder during POM
 * processing by providing a means to transport information that cannot be (easily) extracted from the model itself.
 */

     * configuration are not processed.
     *
     * @param model The model whose paths should be resolved, may be {@code null}.
     * @param basedir The base directory to resolve relative paths against, may be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @since 4.0.0
     */
    Model alignToBaseDirectory(Model model, Path basedir, ModelBuilderRequest request);

 */
package org.apache.maven.api.services.model;

import java.util.List;

import org.apache.maven.api.model.DependencyManagement;
import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.ModelBuilderRequest;
import org.apache.maven.api.services.ModelProblemCollector;

/**
 * Handles the import of dependency management from other models into the target model.
 *
 */

        String artifactId = "maven-model";

        Dependency dep = new Dependency();

        dep.setGroupId( groupId );
        dep.setArtifactId( artifactId );
        dep.setVersion( "2.0-alpha-3" );

        Model model = new Model();

        model.addDependency( dep );

        MavenProject project = new MavenProject( model, repositorySystem );

    String getUserProperty(String key);

    /**
     * Get the model based on the path when resolving the parent based on relativePath.
     *
     * @param from    the requiring model
     * @param pomFile the path to the pomFile
     * @return the model, otherwise {@code null}
     */
    Model getRawModel(Path from, Path pomFile);

    /**

 * under the License.
 */
package org.apache.maven.profiles;

import java.util.List;

import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationFile;
import org.apache.maven.model.ActivationProperty;
import org.apache.maven.model.Profile;
import org.apache.maven.model.Repository;

/**
 * ProfilesConversionUtils
 */
@Deprecated
public class ProfilesConversionUtils {