PluginDescriptor pd = build("/plugin.xml");

        assertEquals("org.apache.maven.plugins", pd.getGroupId());
        assertEquals("maven-jar-plugin", pd.getArtifactId());
        assertEquals("2.3-SNAPSHOT", pd.getVersion());
        assertEquals("jar", pd.getGoalPrefix());
        assertEquals("plugin-description", pd.getDescription());
        assertFalse(pd.isIsolatedRealm(), "Expected " + pd + ".isIsolatedRealm() to return false");

                p.getActivation().getOs().getName(),
                clone.getActivation().getOs().getName());
        assertEquals(
                p.getActivation().getOs().getVersion(),
                clone.getActivation().getOs().getVersion());
        assertEquals(p.getActivation().getPackaging(), clone.getActivation().getPackaging());
        assertEquals(p.getProperties(), clone.getProperties());

    }

    public String getExpandedVersion(Artifact artifact) {
        String key = getKey(artifact.getClassifier(), artifact.getExtension());
        return versions.get(key).getVersion();
    }

    @Override
    protected void merge(Metadata recessive) {
        Snapshot snapshot;
        String lastUpdated;

        if (metadata.getVersioning() == null) {

        });

        TaskProvider<UserGuideTransformTask> dslStandaloneDocbook = tasks.register("dslStandaloneDocbook", UserGuideTransformTask.class, task -> {
            task.getVersion().convention(project.provider(() -> project.getVersion().toString()));
            task.getSourceFile().convention(dslDocbook.flatMap(AssembleDslDocTask::getDestFile));

        assertCollectorState(0, 0, 0, collector);

        assertEquals("3.8.1", (out.getDependencies().get(0)).getVersion());
    }

    @Test
    public void testShouldNotInterpolateDependencyVersionWithInvalidReference() throws Exception {
        Model model = new Model(org.apache.maven.api.model.Model.newBuilder()

/**
 * Test sorting projects by dependencies.
 *
 */
class ProjectSorterTest {
    private Parent createParent(MavenProject project) {
        return createParent(project.getGroupId(), project.getArtifactId(), project.getVersion());
    }

    private Parent createParent(String groupId, String artifactId, String version) {
        Parent plugin = new Parent();
        plugin.setGroupId(groupId);
        plugin.setArtifactId(artifactId);

                CoreExtension conflict = selectedExtensions.putIfAbsent(key, coreExtension);
                if (conflict != null && !Objects.equals(coreExtension.getVersion(), conflict.getVersion())) {
                    conflicts.add(String.format(
                            "Conflicting extension %s: %s vs %s",
                            key,

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

    // test a build where projects use different versions of the same plugin

    @Test
    void testThatPluginDependencyThatHasSystemScopeIsResolved() throws Exception {

 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactCoordinatesFactoryRequest extends Request<Session> {

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    String getCoordinatesString();

    @Nonnull
    static ArtifactCoordinatesFactoryRequest build(

            try {
                Model model = read(project.getFile().toPath());
                String version = model.getVersion();
                if (version == null && model.getParent() != null) {
                    version = model.getParent().getVersion();
                }
                String newVersion;
                if (version != null) {