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,

                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
        if (!versions.isEmpty()) {
            return versions;
        }
        return getAllProjects()

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

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    static ArtifactFactoryRequest build(

                            main.getArtifactId(),
                            BUILD_POM_CLASSIFIER,
                            main.getExtension(),
                            main.getVersion(),
                            main.getProperties(),
                            main.getPath()));
                }
                // If deployBuildPom is false, we simply don't add the build POM to the result

            groupId = model.getParent().getGroupId();
        }

        String artifactId = model.getArtifactId();

        String version = model.getVersion();
        if (version == null && model.getParent() != null) {
            version = model.getParent().getVersion();
        }
        if (version == null) {
            version = "[unknown-version]";
        }

        return toId(groupId, artifactId, version);
    }

                var managedDependency = managedDependencies.get(key);
                if (managedDependency != null) {
                    if (dependency.getVersion() == null && managedDependency.getVersion() != null) {
                        dependency = dependency.withVersion(managedDependency.getVersion());
                    }
                    if (dependency.getScope() == null && managedDependency.getScope() != null) {

        this(
                message,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),
                artifact.getClassifier(),
                remoteRepositories,
                artifact.getDependencyTrail(),
                t);

        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());

            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) {