return new UpgradeParser();
    }

    @Override
    protected ParserRequest.Builder createParserRequestBuilder(String[] args) {
        return ParserRequest.mvnup(args, createMessageBuilderFactory());
    }

    protected Parser createParser() {
        return new MavenParser();
    }

    @Override
    protected ParserRequest.Builder createParserRequestBuilder(String[] args) {
        return ParserRequest.mvn(args, createMessageBuilderFactory());
    }

        return new EncryptParser();
    }

    @Override
    protected ParserRequest.Builder createParserRequestBuilder(String[] args) {
        return ParserRequest.mvnenc(args, createMessageBuilderFactory());
    }

        return new ShellParser();
    }

    @Override
    protected ParserRequest.Builder createParserRequestBuilder(String[] args) {
        return ParserRequest.mvnsh(args, createMessageBuilderFactory());
    }