}

    @Override
    public Optional<Boolean> help() {
        return returnFirstPresentOrEmpty(Options::help);
    }

    @Override
    public void warnAboutDeprecatedOptions(ParserRequest request, Consumer<String> printWriter) {}

    @Override
    public void displayHelp(ParserRequest request, Consumer<String> printWriter) {
        options.get(0).displayHelp(request, printWriter);

        if (commandLine.hasOption(CLIManager.HELP)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public void warnAboutDeprecatedOptions(ParserRequest request, Consumer<String> printWriter) {
        if (cliManager.getUsedDeprecatedOptions().isEmpty()) {
            return;
        }

            // we skip handleException above as we did output
            throw new InvokerException.ExitException(1);
        }

        // warn about deprecated options
        context.options().warnAboutDeprecatedOptions(context.invokerRequest.parserRequest(), context.logger::warn);
    }

    protected void pushCoreProperties(C context) throws Exception {
        System.setProperty(
                Constants.MAVEN_HOME,