}
public void testSortedMap() {
Json json = Json.sortedMap().put("1", 1).put("400", 400).put("3", 3).put("2", 2);
Iterator<String> keys = json.keys().iterator();
assertEquals("1", keys.next());
assertEquals("2", keys.next());
assertEquals("3", keys.next());
assertEquals("400", keys.next());
}