managedDependencies = request.getManagedDependencies();
            remoteRepositories = session.getRemoteRepositories();
        }
        CollectRequest collectRequest = new CollectRequest()
                .setRootArtifact(rootArtifact != null ? session.toArtifact(rootArtifact) : null)
                .setRoot(root != null ? session.toDependency(root, false) : null)

                try {
                    return Collections.unmodifiableList(new ArrayList<>(delegate.getMojoDescriptor()
                            .getPluginDescriptor()
                            .getLifecycleMappings()
                            .values()));
                } catch (Exception e) {
                    throw new RuntimeException("Unable to load plugin lifecycles", e);
                }
            }

            try (InputStream in = Files.newInputStream(userToolchainsFile.toPath())) {
                toolchains = new PersistedToolchains(new MavenToolchainsStaxReader().read(in));
            } catch (Exception e) {
                throw new MisconfiguredToolchainException(
                        "Cannot read toolchains file at " + userToolchainsFile.getAbsolutePath(), e);
            }

/**
 * Handles normalization of a model.
 *
 */
@Named
@Singleton
public class DefaultModelNormalizer implements ModelNormalizer {

    private DuplicateMerger merger = new DuplicateMerger();

    @Override
    public Model mergeDuplicates(Model model, ModelBuilderRequest request, ModelProblemCollector problems) {
        Model.Builder builder = Model.newBuilder(model);

        return plugins;
    }

    private Plugin newPlugin(String artifactId, String... goals) {
        Plugin plugin = new Plugin();

        plugin.setGroupId("org.apache.maven.plugins");
        plugin.setArtifactId(artifactId);

        for (String goal : goals) {
            PluginExecution pluginExecution = new PluginExecution();
            pluginExecution.setId("default-" + goal);
            pluginExecution.addGoal(goal);

            locations = sourceLocations;
        } else {
            locations = new LinkedHashMap<>();
            locations.putAll(sourceDominant ? targetLocations : sourceLocations);
            locations.putAll(sourceDominant ? sourceLocations : targetLocations);
        }

        return new InputLocation(-1, -1, InputSource.merge(source.getSource(), target.getSource()), locations);

        assertEquals(
                new File(pom.getBasedir(), "target/classes/dir0"), new File((String) pom.getValue("properties/dir0")));
        assertEquals(new File(pom.getBasedir(), "src/test/dir1"), new File((String) pom.getValue("properties/dir1")));
        assertEquals(
                new File(pom.getBasedir(), "target/site/dir2"), new File((String) pom.getValue("properties/dir2")));
    }

    @Test

             * This is the layout of output directories in projects using the new (Java 9 and later) way to organize
             * source files.
             */
            if (Files.isDirectory(file)) {
                Map<Path, String> names = new HashMap<>();
                try (Stream<Path> subdirs = Files.list(file)) {

                file = file.getAbsoluteFile();
            } else {
                // an ordinary relative path, align with project directory
                file = new File(new File(basedir, file.getPath()).toURI().normalize()).getAbsoluteFile();
            }
        }
        return file;
    }

        }
    }

    @Deprecated
    @Override
    public MavenMetadata setFile(File file) {
        return new PluginsMetadata(pluginInfo, file.toPath(), timestamp);
    }

    @Override
    public MavenMetadata setPath(Path path) {
        return new PluginsMetadata(pluginInfo, path, timestamp);
    }

    @Override
    public String getGroupId() {
        return pluginInfo.groupId;