assertEquals(4, set.size());
assertTrue(set.contains("subChild1"));
assertTrue(set.contains("subChild2"));
assertTrue(set.contains("subParent3"));
assertTrue(set.contains("subParent4"));
set = bundle.keySet();
assertEquals(6, set.size());
assertTrue(set.contains("subChild1"));
assertTrue(set.contains("subChild2"));
assertTrue(set.contains("subParent1"));
assertTrue(set.contains("subParent2"));