Sources.BuildPathSource source = (Sources.BuildPathSource) Sources.buildSource(basePath);
        ModelSource resolved = source.resolve(locator, "subproject");

        assertNotNull(resolved);
        assertInstanceOf(Sources.BuildPathSource.class, resolved);
        assertEquals(resolvedPath, resolved.getPath());

        verify(locator).locateExistingPom(any(Path.class));
    }

    @Test

 */
public interface PluginVersionResult {

    /**
     * The resolved plugin version.
     *
     * @return The resolved plugin version, never {@code null}.
     */
    String getVersion();

    /**
     * The repository from which the plugin version was resolved.
     *
     * @return The repository from which the plugin version was resolved, never {@code null}.
     */
    ArtifactRepository getRepository();

    public MetadataTreeNode(ArtifactMetadata md, MetadataTreeNode parent, boolean resolved, ArtifactScopeEnum scope) {
        if (md != null) {
            md.setArtifactScope(ArtifactScopeEnum.checkScope(scope));
            md.setResolved(resolved);
        }

        this.md = md;
        this.parent = parent;
    }

    }

    /**
     * Gets the repository from which the specified version was resolved.
     *
     * @param version The version whose source repository should be retrieved, must not be {@code null}
     * @return An Optional containing the repository from which the version was resolved,
     *         or empty Optional if the repository is unknown
     */
    @Nonnull

 *
 * @since 3.0
 */
public interface PluginPrefixResult {

    /**
     * The resolved group id for the plugin.
     *
     * @return The resolved group id for the plugin, never {@code null}.
     */
    String getGroupId();

    /**
     * The resolved artifact id for the plugin.
     *
     * @return The resolved artifact id for the plugin, never {@code null}.
     */
    String getArtifactId();

    /**

    /**
     * Create an instance of the exception with all required information.
     *
     * @param originatingArtifact the artifact that was being resolved
     * @param resolvedArtifacts   artifacts that could be resolved
     * @param missingArtifacts    artifacts that could not be resolved
     * @param remoteRepositories  remote repositories where the missing artifacts were not found
     */
    public MultipleArtifactsNotFoundException(

 * <ul>
 *   <li>Build sources: Used for POM files of projects being built by Maven in the filesystem.
 *       These sources support resolving related POMs using the {@link ModelLocator}.</li>
 *   <li>Resolved sources: Used for artifacts that have been resolved by Maven from repositories
 *       (using groupId:artifactId:version coordinates) and downloaded to the local repository.
 *       These sources do not support resolving other sources.</li>
 * </ul>
 *

        Set<Artifact> resolved = new LinkedHashSet<>();

        if (projects == null || projects.isEmpty()) {
            return resolved;
        }

        if ((scopesToCollect == null || scopesToCollect.isEmpty())
                && (scopesToResolve == null || scopesToResolve.isEmpty())) {
            return resolved;
        }

        /*

    public static ModelSource buildSource(@Nonnull Path path) {
        return new BuildPathSource(requireNonNull(path, "path"));
    }

    /**
     * Creates a new resolved source for the specified path and location.
     * Resolved sources are used for artifacts that have been resolved by Maven
     * from repositories (using groupId:artifactId:version coordinates) and
     * downloaded to the local repository. These sources do not support resolving

     *            null}.
     * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
     * @return The resolved plugin artifact, never {@code null}.
     * @throws PluginResolutionException If the plugin artifact could not be resolved.
     */
    Artifact resolve(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session)
            throws PluginResolutionException;