@Test
 public void testLookupUser() throws FlickrException {
   UrlsInterface iface = flickr.getUrlsInterface();
   String username = testProperties.getUsername();
   String usernameOnFlickr =
       iface.lookupUser(String.format("https://www.flickr.com/people/%s/", username));
   assertEquals(username, usernameOnFlickr);
 }