* source files.
             */
            if (Files.isDirectory(file)) {
                Map<Path, String> names = new HashMap<>();
                try (Stream<Path> subdirs = Files.list(file)) {
                    subdirs.filter(Files::isDirectory).forEach((subdir) -> {
                        Path mf = subdir.resolve(MODULE_INFO);

        }
        return null;
    }

    private static Path findTool(String toolName, Path installDir) {
        Path bin = installDir.resolve("bin"); // NOI18N
        if (Files.isDirectory(bin)) {
            if (Os.IS_WINDOWS) {
                Path tool = bin.resolve(toolName + ".exe");
                if (Files.exists(tool)) {
                    return tool;
                }
            }

        }
    }

    private Path doLocateExistingPom(Path project) {
        if (project == null) {
            project = Paths.get(System.getProperty("user.dir"));
        }
        if (Files.isDirectory(project)) {
            Path pom = project.resolve("pom.xml");
            return Files.isRegularFile(pom) ? pom : null;
        } else if (Files.isRegularFile(project)) {
            return project;
        } else {

            Path pomFile, ModelTransformerContext context, Path relativePath, String groupId, String artifactId) {
        Path pomPath = pomFile.resolveSibling(relativePath).normalize();
        if (Files.isDirectory(pomPath)) {
            pomPath = context.locate(pomPath);
        }

        if (pomPath == null || !Files.isRegularFile(pomPath)) {
            return Optional.empty();
        }

             * source files.
             */
            if (Files.isDirectory(file)) {
                Map<Path, String> names = new HashMap<>();
                try (Stream<Path> subdirs = Files.list(file)) {
                    subdirs.filter(Files::isDirectory).forEach((subdir) -> {
                        Path mf = subdir.resolve(MODULE_INFO);

            if (includeModules) {
                for (String module : project.getModules()) {
                    File modulePom = new File(pom.getParentFile(), module);
                    if (modulePom.isDirectory()) {
                        modulePom = new File(modulePom, "pom.xml");
                    }
                    projects.add(projectBuilder.build(modulePom, configuration).getProject());
                }

import org.apache.maven.api.di.Named;
import org.apache.maven.api.services.model.*;

@Named
public class DefaultRootLocator implements RootLocator {

    public boolean isRootDirectory(Path dir) {
        if (Files.isDirectory(dir.resolve(".mvn"))) {
            return true;
        }
        // we're too early to use the modelProcessor ...
        Path pom = dir.resolve("pom.xml");
        try (InputStream is = Files.newInputStream(pom)) {

    public void cleanUp() throws IOException {
        for (Iterator it = filesToDelete.iterator(); it.hasNext(); ) {
            File file = (File) it.next();

            if (file.exists()) {
                if (file.isDirectory()) {
                    FileUtils.deleteDirectory(file);
                } else {
                    file.delete();
                }
            }

            it.remove();
        }

                if (isModuleHierarchy) {
                    // If module hierarchy is used, the directory names shall be the module names.
                    Path path = test.resolve(moduleName);
                    if (!Files.isDirectory(path)) {
                        // Main module without tests. It is okay.
                        continue;
                    }
                    subdir = path;
                }

                    return true;
                }
            }

            for (Path outputFile : (Iterable<Path>) outputFiles::iterator) {
                if (Files.isDirectory(outputFile)) {
                    continue;
                }

                long outputFileLastModified =
                        Files.getLastModifiedTime(outputFile).toMillis();