super.displayHelp(request, printStream);
        printStream.accept("");
        // we have no DI here (to discover)
        printStream.accept("Goals:");
        printStream.accept("  help  - display this help message");
        printStream.accept("  check - check for available upgrades");
        printStream.accept("  apply - apply available upgrades");

            }

            if ((cause instanceof NoClassDefFoundError) || (cause instanceof ClassNotFoundException)) {
                ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
                PrintStream ps = new PrintStream(os);
                ps.println("Unable to load the mojo '" + mojoDescriptor.getGoal() + "' in the plugin '"
                        + pluginDescriptor.getId() + "'. A required class is missing: "

        context.invokerRequest
                .stdOut()
                .ifPresent(out -> System.setOut(out instanceof PrintStream pw ? pw : new PrintStream(out, true)));
        context.invokerRequest
                .stdErr()
                .ifPresent(err -> System.setErr(err instanceof PrintStream pw ? pw : new PrintStream(err, true)));
    }

    /**

    ArbitraryInstances.get(PrintStream.class).println("test");
    ArbitraryInstances.get(PrintWriter.class).println("test");
    assertThat(ArbitraryInstances.get(File.class)).isNotNull();
    assertFreshInstanceReturned(
        ByteArrayOutputStream.class, OutputStream.class,
        Writer.class, StringWriter.class,
        PrintStream.class, PrintWriter.class);

        try {
            final PrintStream originalOutStream = System.out;
            final ByteArrayOutputStream outStream = new ByteArrayOutputStream();
            System.setOut(new PrintStream(outStream, true));
            final PrintStream originalErrStream = System.err;
            final ByteArrayOutputStream errStream = new ByteArrayOutputStream();
            System.setErr(new PrintStream(errStream, true));
            try {

    ArbitraryInstances.get(PrintStream.class).println("test");
    ArbitraryInstances.get(PrintWriter.class).println("test");
    assertThat(ArbitraryInstances.get(File.class)).isNotNull();
    assertFreshInstanceReturned(
        ByteArrayOutputStream.class, OutputStream.class,
        Writer.class, StringWriter.class,
        PrintStream.class, PrintWriter.class);

     * @param stdout stdout
     * @param stderr stderr
     * @return return code
     */
    public int doMain(String[] args, String workingDirectory, PrintStream stdout, PrintStream stderr) {
        PrintStream oldout = System.out;
        PrintStream olderr = System.err;

        final Set<String> realms;
        if (classWorld != null) {
            realms = new HashSet<>();

        return new CommonsCliOptions(source, cliManager, commandLine);
    }

    @Override
    public void displayHelp(ParserRequest request, Consumer<String> printStream) {
        cliManager.displayHelp(request.command(), printStream);
    }

    protected static class CLIManager {
        public static final String USER_PROPERTY = "D";
        public static final String SHOW_VERSION_AND_EXIT = "v";

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.MalformedURLException;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.logging.log4j.LogManager;