context.installationDirectory,
                context.userHomeDirectory,
                context.userProperties,
                context.systemProperties,
                context.topDirectory,
                context.rootDirectory,
                context.parserRequest.in(),
                context.parserRequest.out(),
                context.parserRequest.err(),
                context.extensions,

                    "-DvalTopDirectory=${session.topDirectory}/pom.xml",
                    "-f",
                    "${session.rootDirectory}/my-child",
                    "prefix:3.0.0:${foo}",
                    "validate"
                },
                null);
        request.rootDirectory = rootDirectory;
        request.topDirectory = topDirectory;

                    topDirectory = path;
                } else if (Files.isRegularFile(path)) {
                    topDirectory = path.getParent();
                    if (!Files.isDirectory(topDirectory)) {
                        System.err.println("Directory " + topDirectory
                                + " extracted from the -f/--file command-line argument " + arg + " does not exist");
                        throw new ExitException(1);

            // maven requires this to be set; so default it (and see below at POM)
            request.setMultiModuleProjectDirectory(
                    context.invokerRequest.topDirectory().toFile());
            request.setRootDirectory(context.invokerRequest.topDirectory());
        }

        MavenOptions options = context.invokerRequest.options();
        request.setNoSnapshotUpdates(options.suppressSnapshotUpdates().orElse(false));

                context.installationDirectory,
                context.userHomeDirectory,
                context.userProperties,
                context.systemProperties,
                context.topDirectory,
                context.rootDirectory,
                context.parserRequest.in(),
                context.parserRequest.out(),
                context.parserRequest.err(),
                context.extensions,

     * This is typically the directory containing the POM file being executed.
     *
     * @return the top-level directory path
     */
    @Nonnull
    Path topDirectory();

    /**
     * Returns the root directory of the Maven invocation, if found. This is determined by the presence of a

            Map<String, String> user = new HashMap<>(invokerRequest.userProperties());
            user.put("session.rootDirectory", invokerRequest.rootDirectory().toString());
            user.put("session.topDirectory", invokerRequest.topDirectory().toString());
            Map<String, String> system = new HashMap<>(invokerRequest.systemProperties());
            this.session = ProtoSession.create(user, system);
        }

    @Deprecated
    File getMultiModuleProjectDirectory();

    /**
     * Sets the top directory of the project.
     *
     * @since 4.0.0
     */
    MavenExecutionRequest setTopDirectory(Path topDirectory);

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the
     * directory pointed at by the {@code -f/--file} command line argument.
     *
     * @since 4.0.0