@Override
  public void rollbackModifiedWithoutCheckout(final List<? extends VirtualFile> files, final List<? super VcsException> exceptions,
                                              final RollbackProgressListener listener) {
    throw new UnsupportedOperationException();
  }
@Override
  public void rollbackModifiedWithoutCheckout(final List<? extends VirtualFile> files, final List<? super VcsException> exceptions,
                                              final RollbackProgressListener listener)