* @deprecated use {@link #setRootDirectory(Path)} instead
     */
    @Deprecated
    void setMultiModuleProjectDirectory(File file);

    /**
     * @since 3.3.0
     * @deprecated use {@link #getRootDirectory()} instead
     */
    @Deprecated
    File getMultiModuleProjectDirectory();

    /**
     * Sets the top directory of the project.
     *
     * @since 4.0.0
     */

                return Collections.emptyList();
            }

            throw e;
        }
    }

    private File getRootProject(MavenExecutionRequest request) {
        Path rootDirectory = request.getRootDirectory();
        if (request.getPom().getParentFile().toPath().equals(rootDirectory)) {
            return request.getPom();
        } else {
            Path rootProjectPom = modelProcessor.locateExistingPom(rootDirectory);

            context.topDirectory = context.cwd;
            parserRequest.logger().error("Error determining top directory", e);
        }
        try {
            context.rootDirectory = getRootDirectory(context);
        } catch (Exception e) {
            context.parsingFailed = true;
            context.rootDirectory = context.cwd;
            parserRequest.logger().error("Error determining root directory", e);

                    break;
            }
        }
        return packaged;
    }

    private Path relativizeOutputFile(final Path outputFile) {
        Path rootDirectory = session.getRequest().getRootDirectory();
        return rootDirectory.relativize(outputFile);
    }

    /**
     * Tries to resolve the specified artifact from the artifacts of the given project.
     *

    }

    @Deprecated
    @Override
    public File getMultiModuleProjectDirectory() {
        return multiModuleProjectDirectory;
    }

    @Override
    public Path getRootDirectory() {
        if (rootDirectory == null) {
            throw new IllegalStateException(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE);
        }
        return rootDirectory;
    }

    @Override

     */
    public static final String LOCAL_REPO_PROPERTY = "maven.repo.local";

    /**
     * @deprecated Use {@link org.apache.maven.api.Session#getRootDirectory()} instead
     */
    public static final String MULTIMODULE_PROJECT_DIRECTORY = "maven.multiModuleProjectDirectory";

    /**
     * @deprecated Use {@link System#getProperty(String)} with "user.home" instead

    }

    /**
     * @since 4.0.0
     * @return the rootDirectory for this project
     * @throws IllegalStateException if the rootDirectory cannot be found
     */
    public Path getRootDirectory() {
        if (rootDirectory == null) {
            throw new IllegalStateException(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE);
        }
        return rootDirectory;
    }