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

    @Override
    public Optional<Boolean> nonRecursive() {
        if (commandLine.hasOption(CLIManager.NON_RECURSIVE)) {
            return Optional.of(Boolean.TRUE);
        }

        if (commandLine.hasOption(CLIManager.FAIL_ON_SEVERITY)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.FAIL_ON_SEVERITY));
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> nonInteractive() {
        if (commandLine.hasOption(CLIManager.NON_INTERACTIVE) || commandLine.hasOption(CLIManager.BATCH_MODE)) {

        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));
            userSettingsFile = resolveFile(userSettingsFile, workingDirectory);

        CommandLine commandLine = parser.parse(options, cleanArgs);
        // to trigger deprecation handler, so we can report deprecation BEFORE we actually use options
        options.getOptions().forEach(commandLine::hasOption);
        return commandLine;
    }

    public Set<Option> getUsedDeprecatedOptions() {
        return usedDeprecatedOptions;
    }

    public void displayHelp(PrintStream stdout) {

        // Verify each method exists
        boolean hasGet = false, hasPost = false, hasPut = false, hasDelete = false;
        boolean hasHead = false, hasOptions = false, hasTrace = false, hasConnect = false;

        for (final Method method : methods) {
            switch (method) {
            case GET:
                hasGet = true;
                break;