protected void checkResponseBodyInvalid(LiveDownloadOperation operation) throws IOException {
   InputStream is = operation.getStream();
   ApiTest.assertEquals(is, INVALID_FORMAT);
 }
 protected void checkOperationMembers(
     LiveDownloadOperation operation, String method, String path, Object userState) {
   assertEquals(method, operation.getMethod());
   assertEquals(path, operation.getPath());
   assertEquals(userState, operation.getUserState());
 }