@Test
 public void danglingViewCauses404() throws MalformedURLException {
   openWindow(DANGLING_VIEW_URI);
   waitModel.until(elementPresent.locator(LABEL));
   firstWindow.click(NAVIGATE_BUTTON);
   waitModel.waitForChange(retrieveText.locator(LABEL));
   assertThat(SecondUI.getNumberOfInstances(), is(1));
   assertThat(DanglingView.getNumberOfInstances(), is(0));
 }