*/
    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;
    }