@Test
public void testChangedNonEqualMaps() {

	Object value = new Object();
	Map<String, Object> leftMap = new HashMap<>();
	leftMap.put("key", value);
	leftMap.put("anotherKey", value);
	Map<String, Object> rightMap = new HashMap<>();
	rightMap.put("key", value);
	MapPropertySource left = new MapPropertySource("left", leftMap);
	MapPropertySource right = new MapPropertySource("right", rightMap);
	boolean changed = stub.changed(left, right);
	Assert.assertTrue(changed);
}