KeyedObjects ko1 = new KeyedObjects();
        ko1.setObject("Key 1", "Object 1");
        ko1.setObject("Key 2", null);
        ko1.setObject("Key 3", "Object 2");
        
        ko1.removeValue(1);
        assertEquals(2, ko1.getItemCount());
        assertEquals(1, ko1.getIndex("Key 3"));