### Question:
YamlUtils { public static <T> Boolean deepEquals(T obj, T otherObj) { if (obj == null && otherObj == null) { return true; } if (obj == null || otherObj == null) { return false; } return Arrays.equals(toBytes(obj), toBytes(otherObj)); }  static T toObject(byte[] bytes, Class<T> classRef); static T toObject(String fileName, Class<T> classRef); static byte[] toBytes(T obj); static void toFile(T obj, String fileName); static T deepCopy(T obj, Class<T> classRef); static Boolean deepEquals(T obj, T otherObj); static Boolean deepEquals(
      Map<TKey, TValue> yamlDict, Map<TKey, TValue> otherYamlDict);  }### Answer:
@Test public void testYamlEquals() throws Exception { YamlUtilsTestHelper object1 = null; YamlUtilsTestHelper object2 = new YamlUtilsTestHelper(); YamlUtilsTestHelper object3 = new YamlUtilsTestHelper(); YamlUtilsTestHelper object4 = YamlUtilsTestHelper.newInstance( 1024, 3.14f, 3.14, true, "Yaml Test"); Assert.assertFalse(YamlUtils.deepEquals(object1, object2)); Assert.assertFalse(YamlUtils.deepEquals(object1, object4)); Assert.assertFalse(YamlUtils.deepEquals(object2, object4)); Assert.assertTrue(YamlUtils.deepEquals(object2, object3)); }