Query query = pm.newQuery(e);
query.setFilter("name == id");
query.declareParameters("String id");
query.setUnique(true);
final String id = n + 3;
Litem litem = (Litem) query.execute(id);//no query
assertNotNull("Null value for " + id, litem);
litem.setName(id + "bis");
//Check that the old value is unbound
litem = (Litem) query.execute(id);//query
assertNull("Old value not unbound from the user cache, " + id, litem);