MavenSession session = legacySupport.getSession();
            if (session != null) {
                if (session.getProjects() != null) {
                    pomRepositories = session.getProjects().stream()
                            .filter(p -> artifact.equals(p.getArtifact()))
                            .findFirst()

        InternalMavenSession mSession = InternalMavenSession.from(iSession);
        MavenSession session = mSession.getMavenSession();

        session.setProjects(projects);
        session.setAllProjects(session.getProjects());

        return session;
    }

    protected void initRepoSession(
            MavenExecutionRequest mavenExecutionRequest, ProjectBuildingRequest projectBuildingRequest)

    public Properties getSystemProperties() {
        return request.getSystemProperties();
    }

    public Settings getSettings() {
        return settings;
    }

    public List<MavenProject> getProjects() {
        return projects;
    }

    /**
     * @deprecated use {@link #getTopDirectory()} ()}
     */
    @Deprecated
    public String getExecutionRootDirectory() {

        projectParent.setCollectedProjects(singletonList(projectModuleD));

        // Set up needed mocks
        when(session.getRequest()).thenReturn(mavenExecutionRequest);
        when(session.getProjects()).thenReturn(null); // needed, otherwise it will be an empty list by default
        when(mavenExecutionRequest.getProjectBuildingRequest()).thenReturn(mock(ProjectBuildingRequest.class));

        lifecycleDebugLogger.debugProjectPlan(project, executionPlan);

        if (session.getRequest().getDegreeOfConcurrency() > 1
                && session.getProjects().size() > 1) {
            final Set<Plugin> unsafePlugins = executionPlan.getNonThreadSafePlugins();
            if (!unsafePlugins.isEmpty()) {
                for (String s : MultilineMessageHelper.format(

            return;
        }

        alreadyPlannedExecutions.add(mojoDescriptor);

        List<MavenProject> forkedProjects =
                LifecycleDependencyResolver.getProjects(project, session, mojoDescriptor.isAggregator());

        for (MavenProject forkedProject : forkedProjects) {
            if (forkedProject != project) {

            this.session = session;
            this.reactorContext = reactorContext;
            this.threads = Math.min(
                    session.getRequest().getDegreeOfConcurrency(),
                    session.getProjects().size());
            // Propagate the parallel flag to the root session
            session.setParallel(threads > 1);

                    boolean reactorMember = pomFile != null
                            && session.getProjects() != null // this is for UTs
                            && session.getProjects().stream()
                                    .anyMatch(
                                            p -> p.getPomPath().toAbsolutePath().equals(pomFile.toAbsolutePath()));

    /**
     * Retrieves a list of projects associated with the session.
     *
     * @return a list of projects, never {@code null}
     */
    @Nonnull
    List<Project> getProjects();

    /**
     * Returns the plugin context for mojo being executed and the specified
     * {@link Project}, never returns {@code null} as if context not present, creates it.
     *

                return result.getProject();
            }
        }
        return null;
    }

    private void assertResultShowNoError(List<ProjectBuildingResult> results) {
        for (ProjectBuildingResult result : results) {
            assertTrue(result.getProblems().isEmpty());
            assertNotNull(result.getProject());
        }
    }

    @Test