public void addStatusCode(String response) {
        if ("200".equalsIgnoreCase(response)) {
            add200OK();
        } else if (response != null && response.startsWith("50")) {
            add50X();
        } else if (response != null && response.startsWith("40")) {
            add40X();
        } else if (response != null && response.startsWith("30")) {
            add30X();
        }
    }