/**
     * ManagementModelMerger
     */
    protected static class ManagementModelMerger extends MavenModelMerger {

        public void mergeManagedBuildPlugins(Model model) {
            Build build = model.getBuild();
            if (build != null) {
                PluginManagement pluginManagement = build.getPluginManagement();
                if (pluginManagement != null) {

        Parent parent = model.getParent();
        if (parent != null) {
            model = model.withParent(parent.withRelativePath(null));
        }
        var projectSources = project.getBuild().getDelegate().getSources();
        if (SourceQueries.usesModuleSourceHierarchy(projectSources)) {
            // Dependencies are dispatched by maven-jar-plugin in the POM generated for each module.

        Reporting reporting = model.getReporting();

        if (reporting == null) {
            return;
        }

        Build build = model.getBuild();

        if (build == null) {
            build = new Build();
            model.setBuild(build);
            model.setLocation("build", location);
        }

        Plugin sitePlugin = findSitePlugin(build);

        if (sitePlugin == null) {

        assertCollectorState(0, 0, 0, collector);

        List<Resource> outResources = out.getBuild().getResources();
        Iterator<Resource> resIt = outResources.iterator();

        assertEquals(model.getBuild().getSourceDirectory(), resIt.next().getDirectory());
    }

    @Test
    public void shouldInterpolateUnprefixedBasedirExpression() throws Exception {

         * not interested in any of the executions bound to it.
         */

        for (Plugin plugin : project.getBuild().getPlugins()) {
            for (PluginExecution execution : plugin.getExecutions()) {
                // if the phase is specified then I don't have to go fetch the plugin yet and pull it down

                visit(model.getPrerequisites());
                visit(model.getScm());
                visit(model.getIssueManagement());
                visit(model.getCiManagement());
                visit(model.getBuild());
                for (Profile profile : model.getProfiles()) {
                    visit(profile);
                }
            }
        }

        private void visit(Parent parent) {

                        .collect(Collectors.toSet());
                for (BuildStep step : planSteps) {
                    MavenProject project = step.project;
                    for (Plugin plugin : project.getBuild().getPlugins()) {
                        for (PluginExecution execution : plugin.getExecutions()) {
                            for (String goal : execution.getGoals()) {

            validateRawRepositories(
                    problems, m.getPluginRepositories(), "pluginRepositories.pluginRepository.", EMPTY, request);

            Build build = m.getBuild();
            if (build != null) {
                validate20RawPlugins(problems, build.getPlugins(), "build.plugins.plugin.", EMPTY, request);

                PluginManagement mgmt = build.getPluginManagement();

            UpgradeContext context, Model effectiveModel, Map<String, PluginUpgrade> pluginUpgrades) {
        Set<String> pluginsNeedingUpgrade = new HashSet<>();

        Build build = effectiveModel.getBuild();
        if (build != null) {
            // Check build/plugins - these are the actual plugins used in the build
            for (Plugin plugin : build.getPlugins()) {

        Build src = source.getBuild();
        if (src != null) {
            Build tgt = target.getBuild();
            if (tgt == null) {
                tgt = new Build();
                target.setBuild(tgt);
            }
            mergeBuild(tgt, src, sourceDominant, context);
        }
    }