PomTestWrapper pom = buildPom("plugin-exec-merging-wo-version/sub");
        assertEquals(4, ((List<?>) pom.getValue("build/plugins[1]/executions")).size());
    }

    /* MNG-3943*/
    @Test
    void testMergeOfPluginExecutionsWhenChildAndParentUseDifferentPluginVersions() throws Exception {
        PomTestWrapper pom = buildPom("plugin-exec-merging-version-insensitive/sub");

    void testPluginDescriptorExpressionReference() throws Exception {
        MojoExecution exec = newMojoExecution();

        MavenSession session = newMavenSession();

        Object result = new PluginParameterExpressionEvaluator(session, exec).evaluate("${plugin}");

        System.out.println("Result: " + result);

        assertSame(
                exec.getMojoDescriptor().getPluginDescriptor(),
                result,

        Map<String, List<String>> goals = new HashMap<>();
        lifecycle.phases().forEach(phase -> phase.plugins()
                .forEach(plugin -> plugin.getExecutions().forEach(exec -> exec.getGoals()
                        .forEach(goal -> goals.computeIfAbsent(phase.name(), n -> new ArrayList<>())
                                .add(plugin.getGroupId() + ":" + plugin.getArtifactId() + ":" + plugin.getVersion()

        Session session = newSession();
        MojoExecution exec = newMojoExecution(session);

        Object result =
                new PluginParameterExpressionEvaluatorV4(session, null, exec).evaluate("${mojo.plugin.descriptor}");

        System.out.println("Result: " + result);

        assertSame(
                exec.getPlugin().getDescriptor(),
                result,

                    protected void setRawResult(Result result) {
                        this.result = result;
                    }

                    @Override
                    protected boolean exec() {
                        try {
                            AtomicReference<Parent> modified = new AtomicReference<>();
                            ModelSource source = doResolveModel(parent, modified);

        WorkspaceReader reactorReader = lookup.lookup(WorkspaceReader.class, ReactorReader.HINT);
        workspaceReaders.add(reactorReader);
        // 2) Repository system session-scoped workspace reader (contains ide and exec request reader)
        for (WorkspaceReader repoWorkspaceReader : chainedWorkspaceReader.getReaders()) {
            if (repoWorkspaceReader != null && repoWorkspaceReader != reactorReader) {

                List<PluginExecution> execs = new ArrayList<>();
                List<Dependency> deps = new ArrayList<>();

                Plugin existing = plugins.get(key);
                if (existing != null) {
                    if (version == null) {
                        version = existing.getVersion();
                    }
                    execs.addAll(existing.getExecutions());

            } else {
                index.put(key, plugin);
            }

            Set<String> executionIds = new HashSet<>();

            for (PluginExecution exec : plugin.getExecutions()) {
                if (!executionIds.add(exec.getId())) {
                    addViolation(
                            problems,
                            Severity.ERROR,
                            Version.V20,

        if (cur != null) {
            Map<String, PluginExecution> execs = new LinkedHashMap<>();
            cur.getExecutions().forEach(e -> execs.put(e.getId(), e));
            plugin.getExecutions().forEach(e -> {
                int i = 0;
                String id = e.getId();
                while (execs.putIfAbsent(id, e.withId(id)) != null) {
                    id = e.getId() + "-" + (++i);

                String filename = file.getFileName().toString();
                if (mavenArtifactJar.matcher(filename).matches()) {
                    Process p = Runtime.getRuntime().exec(new String[] {
                        Paths.get(System.getProperty("java.home"), "bin/java").toString(),
                        "-jar",
                        file.toAbsolutePath().toString(),
                        "5.32",