String url = "http://www.test.com/image.png";
blip.append(new Image(url, 100, 100, "Cool pix."));
assertEquals(2, blip.getElements().size());
// Update the image by appending a query param to the URL.
blip.first(ElementType.IMAGE).updateElement(new MapFunction() {
@Override
public Map<String, String> call(BlipContent source) {
Image matchedImage = (Image) source;
Map<String, String> properties = new HashMap<String, String>();
properties.put("url", matchedImage.getUrl() + "?version=newversion");