.artifactId(pluginInfo.artifactId)
                        .name(pluginInfo.name)
                        .build()))
                .build();
    }

    @Override
    protected void merge(Metadata recessive) {
        List<Plugin> recessivePlugins = recessive.getPlugins();
        List<Plugin> plugins = metadata.getPlugins();
        if (!recessivePlugins.isEmpty() || !plugins.isEmpty()) {

            versioning.latest(artifact.getBaseVersion());
        }

        metadata.versioning(versioning.build());

        return metadata.build();
    }

    @Override
    protected void merge(Metadata recessive) {
        Versioning original = metadata.getVersioning();

        Versioning.Builder versioning = Versioning.newBuilder(original);
        versioning.lastUpdated(fmt.format(timestamp));

        Source userSource = request.getUserToolchainsSource().orElse(null);
        PersistedToolchains user = readToolchains(userSource, request, problems);

        PersistedToolchains effective = toolchainsMerger.merge(user, global, false, null);

        if (hasErrors(problems)) {
            throw new ToolchainsBuilderException("Error building toolchains", problems);
        }

                        .map(Object::toString)
                        .toList();
                request.getModelRepositoryHolder().merge(model.getRepositories(), false);
                List<String> newRepos = request.getModelRepositoryHolder().getRepositories().stream()
                        .map(Object::toString)
                        .toList();

    }

    /* MNG-4129 */
    @Test
    void testPluginExecutionInheritanceWhenChildDoesNotDeclarePlugin() throws Exception {
        PomTestWrapper pom = buildPom("plugin-exec-inheritance/wo-merge");
        @SuppressWarnings("unchecked")
        List<PluginExecution> executions = (List<PluginExecution>) pom.getValue(

            <ul>
            <li>{@code combine.children}: available values are {@code merge} (default) and {@code append},</li>
            <li>{@code combine.self}: available values are {@code merge} (default) and {@code override}.</li>
            </ul>

            @see <a href="https://maven.apache.org/pom.html#Plugins">POM Reference documentation</a>

        Source userSource = request.getUserSettingsSource().orElse(null);
        Settings user = readSettings(userSource, false, request, problems);

        Settings effective =
                settingsMerger.merge(user, settingsMerger.merge(project, global, false, null), false, null);

        // If no repository is defined in the user/global settings,
        // it means that we have "old" settings (as those are new in 4.0)

 *
 */
public interface PluginManagementInjector {

    /**
     * Merges default values from the plugin management section of the given model into itself.
     *
     * @param model The model into which to merge the values specified by its plugin management section, must not be
     *            <code>null</code>.
     * @param request The model building request that holds further settings, must not be {@code null}.

                .build();

        Settings recessive = Settings.newBuilder()
                .pluginGroups(Arrays.asList("org.codehaus.plexus"))
                .build();

        Settings merged = SettingsUtilsV4.merge(dominant, recessive);

        List<String> pluginGroups = merged.getPluginGroups();

        assertNotNull(pluginGroups);
        assertEquals(3, pluginGroups.size());

TRIBUTE = combine.children; public static final String CHILDREN_COMBINATION_MERGE = merge; public static final String CHILDREN_COMBINATION_APPEND = append; public static final String DEFAULT_CHILDREN_COMBINATION_MODE = merge; public static final String SELF_COMBINATION_MODE_ATTRIBUTE = combine.self; public static final String SELF_COMBINATION_OVERRIDE = override; public static final String SELF_COMBINATION_MERGE = merge; public static final String DEFAULT_SELF_COMBINATION_MODE = merge; public void...