static MemberMap createNew(MemberImpl... members) {
        return createNew(0, members);
    }
@Test(expected = IllegalArgumentException.class)
    public void create_failsWithDuplicateUuid() {
        MemberImpl member1 = newMember(5000);
        MemberImpl member2 = new MemberImpl.Builder(newAddress(5001))
                .version(VERSION)
                .uuid(member1.getUuid()).build();
        MemberMap.createNew(member1, member2);
    }