public void test_chain_from_object() {
Worker w = new Worker();
w.age = 20;
w.name = "zzh";
Chain c = Chain.from(w, FieldMatcher.make("age|name", null, true));
Map<String, Object> map = c.toMap();
assertEquals(2, map.size());
assertEquals("zzh", map.get("name"));
assertEquals(20, ((Short) map.get("age")).intValue());
}