### Question:
EntityCollection extends BaseObject { public T findById(Serializable id) { return one(name + ".id", id); }  T add(T item); T remove(T item); T findById(Serializable id); List<T> all(); T first(Object... paramValues); T one(Object... paramValues); List<T> where(Filter filter); List<T> where(Object... paramValues); long count(Filter filter); void persist();  }### Answer:
@Test public void shouldFindById() { assertEquals(model.collection("children").findById(child2.getId()), child2); }