@Override
    public int size() {
        return count(members, selector);
    }
@Test
    public void testSizeWhenDataMembersSelectedAndNoLocalMember() {
        Collection<MemberImpl> collection = new MemberSelectingCollection<>(members,
                and(DATA_MEMBER_SELECTOR, NON_LOCAL_MEMBER_SELECTOR));
        assertEquals(1, collection.size());
    }