private File getMultiModuleProjectPomFile(MavenExecutionRequest request) {
        File multiModuleProjectDirectory = request.getMultiModuleProjectDirectory();
        if (request.getPom().getParentFile().equals(multiModuleProjectDirectory)) {
            return request.getPom();
        } else {
            File multiModuleProjectPom = modelLocator.locateExistingPom(multiModuleProjectDirectory);
            if (multiModuleProjectPom == null) {

     *         repositories.
     */
    Model getPom();

    /**
     * Sets the POM whose build plugins are to be scanned for the prefix.
     *
     * @param pom The POM whose build plugins are to be scanned for the prefix, may be {@code null} to only search the
     *            plugin repositories.
     * @return This request, never {@code null}.
     */
    PluginPrefixRequest setPom(Model pom);

    /**

    public DefaultPluginVersionRequest setArtifactId(String artifactId) {
        this.artifactId = artifactId;

        return this;
    }

    public Model getPom() {
        return pom;
    }

    public DefaultPluginVersionRequest setPom(Model pom) {
        this.pom = pom;

        return this;
    }

    public List<RemoteRepository> getRepositories() {
        return repositories;
    }

        }
    }

    private void baseDirectory(MavenExecutionRequest request) {
        if (request.getBaseDirectory() == null && request.getPom() != null) {
            request.setBaseDirectory(request.getPom().getAbsoluteFile().getParentFile());
        }
    }

    /*if_not[MAVEN4]*/

    @Override
    @Deprecated

    }

    @Override
    public List<MavenProject> collectProjects(MavenExecutionRequest request) throws ProjectBuildingException {
        List<File> files = Collections.singletonList(request.getPom().getAbsoluteFile());
        return projectsSelector.selectProjects(files, request);
    }

        } else {
            this.pluginGroups = Collections.emptyList();
        }

        return this;
    }

    public Model getPom() {
        return pom;
    }

    public DefaultPluginPrefixRequest setPom(Model pom) {
        this.pom = pom;

        return this;
    }

    public List<RemoteRepository> getRepositories() {
        return repositories;
    }

     *         repositories.
     */
    Model getPom();

    /**
     * Sets the POM whose build plugins are to be scanned for the version.
     *
     * @param pom The POM whose build plugins are to be scanned for the version, may be {@code null} to only search the
     *            plugin repositories.
     * @return This request, never {@code null}.
     */
    PluginVersionRequest setPom(Model pom);

    /**

            if (!optSelectedProject.isPresent()) {
                String message = "Could not find the selected project in the reactor: " + selector;
                throw new MavenExecutionException(message, request.getPom());
            }

            MavenProject selectedProject = optSelectedProject.get();

            selectedProjects.add(selectedProject);
            selectedProjects.addAll(getChildProjects(selectedProject, request));

    }

    public NodePointer createNodePointer(QName name, Object object, Locale locale) {
        if (object instanceof org.codehaus.plexus.util.xml.Xpp3Dom) {
            object = ((org.codehaus.plexus.util.xml.Xpp3Dom) object).getDom();
        }
        if (object instanceof XmlNode) {
            return new Xpp3DomNodePointer((XmlNode) object);
        }
        return null;
    }

        System.out.println(
                "Child SCM developer connection is: " + project1.getScm().getDeveloperConnection());

        assertEquals(project1.getScm().getUrl(), project0.getScm().getUrl() + "/modules/p1");
        assertEquals(project1.getScm().getConnection(), project0.getScm().getConnection() + "/modules/p1");
        assertEquals(