* This is usually set by the Maven launcher script using the "maven.home" system property.
     *
     * @return the Maven installation directory path
     */
    @Nonnull
    Path installationDirectory();

    /**
     * Returns the user's home directory.
     * This is typically obtained from the "user.home" system property.
     *
     * @return the user's home directory path
     */
    @Nonnull