public Optional<String> threads() {
        if (commandLine.hasOption(CLIManager.THREADS)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.THREADS));
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> builder() {
        if (commandLine.hasOption(CLIManager.BUILDER)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.BUILDER));
        }

        CommandLine commandLine = cliRequest.getCommandLine();
        String workingDirectory = cliRequest.getWorkingDirectory();
        MavenExecutionRequest request = cliRequest.getRequest();

        File userSettingsFile;

        if (commandLine.hasOption(CLIManager.ALTERNATE_USER_SETTINGS)) {
            userSettingsFile = new File(commandLine.getOptionValue(CLIManager.ALTERNATE_USER_SETTINGS));

        assertEquals("multithreaded", request.commandLine.getOptionValue(CLIManager.BUILDER));
        assertEquals("8", request.commandLine.getOptionValue(CLIManager.THREADS));

        // override from command line
        request = new CliRequest(new String[] {"--builder", "foobar"}, null);
        cli.cli(request);
        assertEquals("foobar", request.commandLine.getOptionValue("builder"));
    }

    @Test

import java.util.Properties;

import org.apache.commons.cli.CommandLine;
import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.MavenExecutionRequest;
import org.codehaus.plexus.classworlds.ClassWorld;

/**
 * CliRequest
 */
public class CliRequest {
    String[] args;

    CommandLine commandLine;

    ClassWorld classWorld;

    String workingDirectory;

    protected final CLIManager cliManager;
    protected final CommandLine commandLine;

    protected CommonsCliOptions(String source, CLIManager cliManager, CommandLine commandLine) {
        this.source = requireNonNull(source);
        this.cliManager = requireNonNull(cliManager);
        this.commandLine = requireNonNull(commandLine);
    }

    @Override
    public String source() {
        return source;

        // LOG LEVEL
        CommandLine commandLine = cliRequest.commandLine;
        cliRequest.verbose = commandLine.hasOption(CLIManager.VERBOSE) || commandLine.hasOption(CLIManager.DEBUG);
        cliRequest.quiet = !cliRequest.verbose && commandLine.hasOption(CLIManager.QUIET);
        cliRequest.showErrors = cliRequest.verbose || commandLine.hasOption(CLIManager.ERRORS);

        // LOG COLOR

        return new CommonsCliEncryptOptions(Options.SOURCE_CLI, cliManager, cliManager.parse(args));
    }

    protected CommonsCliEncryptOptions(String source, CLIManager cliManager, CommandLine commandLine) {
        super(source, cliManager, commandLine);
    }

    private static CommonsCliEncryptOptions interpolate(
            CommonsCliEncryptOptions options, Collection<Map<String, String>> properties) {
        try {

                .append("\", family: \"")
                .append(Os.OS_FAMILY)
                .append('\"');
        // Add process information using modern Java API
        if (commandLine != null) {
            version.append(ls).append("Command line: ").append(commandLine);
        }
        if (terminal != null) {
            version.append(ls).append("Terminal: ").append(terminal);
        }
        return version.toString();
    }

    }

    public CommandLine parse(String[] args) throws ParseException {
        // We need to eat any quotes surrounding arguments...
        String[] cleanArgs = CleanArgument.cleanArgs(args);

        DefaultParser parser = DefaultParser.builder()
                .setDeprecatedHandler(usedDeprecatedOptions::add)
                .build();

        CommandLine commandLine = parser.parse(options, cleanArgs);

import java.util.Properties;

import org.apache.maven.model.building.ModelBuildingRequest;

/**
 * Allows a fixed set of properties that are valid inside a version and that could be overwritten for example on the
 * commandline
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelVersionProcessor {

    /**
     * @param property the property to check