// assertNotNull( mojoDescriptor.getRealm() );

        PluginDescriptor pluginDescriptor = mojoDescriptor.getPluginDescriptor();
        assertNotNull(pluginDescriptor);
        assertEquals("org.apache.maven.its.plugins", pluginDescriptor.getGroupId());
        assertEquals("maven-it-plugin", pluginDescriptor.getArtifactId());
        assertEquals("0.1", pluginDescriptor.getVersion());
    }

        MavenSession session = legacySupport.getSession();

        PluginDescriptor pluginDescriptor;
        try {
            pluginDescriptor = pluginManager.getPluginDescriptor(
                    plugin, session.getCurrentProject().getRemotePluginRepositories(), session.getRepositorySession());

            pluginManager.setupPluginRealm(pluginDescriptor, session, null, null, null);
        } catch (Exception e) {

        PluginDescriptor pluginDescriptor = mojoDescriptor.getPluginDescriptor();

        String forkedGoal = mojoDescriptor.getExecuteGoal();

        MojoDescriptor forkedMojoDescriptor = pluginDescriptor.getMojo(forkedGoal);
        if (forkedMojoDescriptor == null) {
            throw new MojoNotFoundException(forkedGoal, pluginDescriptor);
        }

        discoverPluginComponents(pluginRealm, plugin, pluginDescriptor);

        pluginDescriptor.setDependencyNode(result.getRoot());
        pluginDescriptor.setClassRealm(pluginRealm);
        pluginDescriptor.setArtifacts(pluginArtifacts);
    }

    private void discoverPluginComponents(
            final ClassRealm pluginRealm, Plugin plugin, PluginDescriptor pluginDescriptor)
            throws PluginContainerException {

            legacySupport.setSession(oldSession);
        }
    }

    /**
     * TODO pluginDescriptor classRealm and artifacts are set as a side effect of this
     *      call, which is not nice.
     * @throws PluginResolutionException
     */
    public ClassRealm getPluginRealm(MavenSession session, PluginDescriptor pluginDescriptor)
            throws PluginResolutionException, PluginManagerException {

        plugin.setGroupId(request.getGroupId());
        plugin.setArtifactId(request.getArtifactId());
        plugin.setVersion(version);

        PluginDescriptor pluginDescriptor;

        try {
            pluginDescriptor = pluginManager.getPluginDescriptor(
                    plugin, request.getRepositories(), request.getRepositorySession());
        } catch (PluginResolutionException e) {

        assertEquals("expected-directory" + File.separatorChar + "expected-finalName", value);
    }

    @Test
    void testShouldExtractPluginArtifacts() throws Exception {
        PluginDescriptor pd = new PluginDescriptor();

        Artifact artifact = createArtifact("testGroup", "testArtifact", "1.0");

        pd.setArtifacts(Collections.singletonList(artifact));

        for (Plugin plugin : plugins) {
            try {
                PluginDescriptor pluginDescriptor =
                        pluginManager.loadPlugin(plugin, request.getRepositories(), request.getRepositorySession());

                if (request.getPrefix().equals(pluginDescriptor.getGoalPrefix())) {
                    return new DefaultPluginPrefixResult(plugin);
                }

                int pathSeparator = expression.indexOf('/');

                PluginDescriptor pluginDescriptor = mojoDescriptor.getPluginDescriptor();

                if (pathSeparator > 0) {
                    String pathExpression = expression.substring(0, pathSeparator);
                    value = ReflectionValueExtractor.evaluate(pathExpression, pluginDescriptor);
                    value = value + expression.substring(pathSeparator);

import org.apache.maven.internal.impl.SettingsUtilsV4;
import org.apache.maven.model.Profile;
import org.apache.maven.monitor.event.EventDispatcher;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingRequest;
import org.apache.maven.settings.Mirror;
import org.apache.maven.settings.Proxy;