*/
  @Override
  protected void expectContents(Collection<E> expectedCollection) {
    List<E> expectedList = copyToList(expectedCollection);
    // Avoid expectEquals() here to delay reason manufacture until necessary.
    if (getList().size() != expectedList.size()) {
      fail("size mismatch: " + reportContext(expectedList));
    }
    for (int i = 0; i < expectedList.size(); i++) {

                                  type: number
                              type: object
                          type: object
                        delay:
                          description: Delay requests before forwarding, emulating
                            various failures such as network issues, overloaded upstream
                            service, etc.