242 project 4: Flickr with cache source="{data.thumbnail.url}"/> ... </s:ItemRenderer> When the image is loaded the function will create an instance of CacheItem, set its properties, call its doCache() method, and add the item to the cache. If we run the application and we perform a successful search we should see on our desktop a new folder, named FlickrCache, which contains a set of 20 images. They are the thumbs cached by our application (Figure 4.6). Now we need to use them when there is no Internet connection.