* is mutable (as CWD may be changed), but allows transition only to existing directories.
 */
public final class CWD implements Supplier<Path> {
    /**
     * Creates instance out of {@link Path}.
     */
    public static CWD create(Path path) {
        return new CWD(CliUtils.getCanonicalPath(path));
    }

    private Path directory;

    private CWD(Path directory) {

        return new MavenParser();
    }

    @Test
    void defaultFs(
            @TempDir(cleanup = CleanupMode.ON_SUCCESS) Path cwd,
            @TempDir(cleanup = CleanupMode.ON_SUCCESS) Path userHome)
            throws Exception {
        invoke(cwd, userHome, List.of("verify"), List.of());
    }

    @Disabled("Enable it when fully moved to NIO2 with Path/Filesystem (ie MavenExecutionRequest)")
    @Test

	}
	cwd, err = filepath.EvalSymlinks(cwd)
	if err != nil {
		log.Fatal(err)
	}
	goroot, err := filepath.EvalSymlinks(runtime.GOROOT())
	if err != nil {
		return "", false, err
	}
	if strings.HasPrefix(cwd, goroot) {
		subdir, err := filepath.Rel(goroot, cwd)
		if err != nil {
			return "", false, err
		}
		return subdir, true, nil
	}

        private List<Completer> cdCompleter(String name) {
            return List.of(new ArgumentCompleter(new Completers.DirectoriesCompleter(shellContext.cwd)));
        }

        private void pwd(CommandInput input) {
            try {
                shellContext.writer.accept(shellContext.cwd.get().toString());
            } catch (Exception e) {
                saveException(e);
            }
        }

    @Internal
    protected String getCommandString() {
        String commandString = "\n${name} configuration:\n"
        commandString += "-----------------------------------------\n"
        commandString += "  cwd: ${cwd}\n"
        commandString += "  command: ${executable} ${arguments.join(' ')}\n"
        commandString += '  environment:\n'
        environment.each { k, v -> commandString += "    ${k}: ${v}\n" }
        if (spawn) {

            @Nullable CIInfo ciInfo,
            @Nullable Options options) {
        this.parserRequest = requireNonNull(parserRequest);
        this.parsingFailed = parsingFailed;
        this.cwd = requireNonNull(cwd);
        this.installationDirectory = requireNonNull(installationDirectory);
        this.userHomeDirectory = requireNonNull(userHomeDirectory);

        this.userProperties = requireNonNull(userProperties);

        }

        public Builder lookup(@Nonnull Lookup lookup) {
            this.lookup = requireNonNull(lookup);
            return this;
        }

        public Builder cwd(Path cwd) {
            this.cwd = cwd;
            return this;
        }

        public Builder mavenHome(Path mavenHome) {
            this.mavenHome = mavenHome;
            return this;
        }

        return new MavenParser();
    }

    @Test
    void defaultFs(
            @TempDir(cleanup = CleanupMode.ON_SUCCESS) Path cwd,
            @TempDir(cleanup = CleanupMode.ON_SUCCESS) Path userHome)
            throws Exception {
        invoke(cwd, userHome, List.of("verify"), List.of());
    }

    @Disabled("Enable it when fully moved to NIO2 with Path/Filesystem (ie MavenExecutionRequest)")
    @Test

            }
            """;

    protected Map<String, String> invoke(Path cwd, Path userHome, Collection<String> goals, Collection<String> args)
            throws Exception {
        Files.createDirectories(cwd.resolve(".mvn"));
        Path pom = cwd.resolve("pom.xml").toAbsolutePath();
        Files.writeString(pom, POM_STRING);
        Path appJava = cwd.resolve("src/main/java/org/apache/maven/samples/sample/App.java");

    };

    @Test
    void happy() {
        InvokerRequest invokerRequest =
                subject.parseInvocation(ParserRequest.mvn(Arrays.asList("-e", "-X"), mock(MessageBuilderFactory.class))
                        .cwd(Path.of(System.getProperty("userDir")))
                        .userHome(Path.of(System.getProperty("userHome")))
                        .build());

        Assertions.assertTrue(invokerRequest.options().isPresent());