public static Collection<Member> multiParse(Collection<String> addresses) {
        List<Member> members = new ArrayList<>(addresses.size());
        for (String address : addresses) {
            Member member = singleParse(address);
            members.add(member);
        }
        return members;
    }
@Test
    void testMultiParse() {
        Collection<String> address = new HashSet<>();
        address.add("1.1.1.1:3306");
        address.add("1.1.1.1");
        Collection<Member> actual = MemberUtil.multiParse(address);
        assertEquals(2, actual.size());
    }