public String convert(final String url) {
        final String targetStr = getDuplicateHostName().replace(".", "\\.");
        return url.replaceFirst("://" + targetStr + "$", "://" + getRegularName())
                .replaceFirst("://" + targetStr + "([:/])", "://" + getRegularName() + "$1");
    }

    @Override
    public String toString() {

        assertEquals(testList, helper.duplicateHostList);
        assertEquals(1, helper.duplicateHostList.size());
        assertEquals("www.test.com", helper.duplicateHostList.get(0).getRegularName());
    }

    @Test
    public void test_add() {
        DuplicateHostHelper helper = new DuplicateHostHelper();

        DuplicateHost testHost = new DuplicateHost();

    }

    public void setDuplicateHostName(String value) {
        registerModifiedProperty("duplicateHostName");
        this.duplicateHostName = value;
    }

    public String getRegularName() {
        checkSpecifiedProperty("regularName");
        return convertEmptyToNull(regularName);
    }

    public void setRegularName(String value) {
        registerModifiedProperty("regularName");