}

    @Override
    public Path getRootDirectory() {
        return getMavenSession().getRequest().getRootDirectory();
    }

    @Override
    public Path getTopDirectory() {
        return getMavenSession().getRequest().getTopDirectory();
    }

    @Nonnull
    @Override
    public List<Project> getProjects() {
        return getProjects(getMavenSession().getProjects());
    }

    @Nonnull

    }

    /**
     * @deprecated use {@link #getTopDirectory()} ()}
     */
    @Deprecated
    public String getExecutionRootDirectory() {
        return request.getBaseDirectory();
    }

    /**
     * @see MavenExecutionRequest#getTopDirectory()
     * @since 4.0.0
     */
    public Path getTopDirectory() {
        return request.getTopDirectory();
    }

    /**

        this.userProperties.putAll(properties);
    }

    public Path getRootDirectory() {
        return rootDirectory;
    }

    public Path getTopDirectory() {
        return topDirectory;
    }

    /**
     * @deprecated use {@link #setTopDirectory(Path)} instead
     */
    @Deprecated
    MavenExecutionRequest setBaseDirectory(File basedir);

    /**
     * @deprecated use {@link #getTopDirectory()} instead
     */
    @Deprecated
    String getBaseDirectory();

    // Timing (remove this)
    MavenExecutionRequest setStartTime(Date start);

    Date getStartTime();

    // Goals

        when(rootProject.getBasedir()).thenReturn(basedir);
        MavenSession session = mock(MavenSession.class);
        when(session.getTopLevelProject()).thenReturn(rootProject);
        when(session.getTopDirectory()).thenReturn(basedir.toPath());
        when(event.getSession()).thenReturn(session);

        // execute
        executionEventLogger.projectStarted(event);

        // verify

        context.userHomeDirectory = requireNonNull(getUserHomeDirectory(context));

        // top/root
        context.topDirectory = requireNonNull(getTopDirectory(context));
        context.rootDirectory = getRootDirectory(context);

        // options
        List<O> parsedOptions = parseCliOptions(context);

        // warn about deprecated options

        }
        return Collections.emptyList();
    }

    @Override
    public boolean isTopProject() {
        return getBasedir().equals(getSession().getTopDirectory());
    }

    @Override
    public boolean isRootProject() {
        return getBasedir().equals(getRootDirectory());
    }

    @Override
    public Path getRootDirectory() {

            if (currentPom != null) {
                MavenSession session = event.getSession();
                Path current = currentPom.toPath().toAbsolutePath().normalize();
                Path topDirectory = session.getTopDirectory();
                if (topDirectory != null && current.startsWith(topDirectory)) {
                    current = topDirectory.relativize(current);
                }
                logger.info("  from " + current);

    public int getDegreeOfConcurrency() {
        return 0;
    }

    @Override
    public Instant getStartTime() {
        return startTime;
    }

    @Override
    public Path getTopDirectory() {
        return null;
    }

    @Override
    public Path getRootDirectory() {
        throw new IllegalStateException();
    }

    @Override
    public List<Project> getProjects() {

     * @see #getRootDirectory()
     */
    @Nonnull
    Path getTopDirectory();

    /**
     * Gets the root directory of the session, which is the root directory for the top directory project.
     *
     * @return the root directory, never {@code null}
     * @throws IllegalStateException if the root directory could not be found
     * @see #getTopDirectory()
     * @see Project#getRootDirectory()