@Override
  public int hashCode() {
    int result = BEFORE_PATH != null ? BEFORE_PATH.hashCode() : 0;
    result = 31 * result + (AFTER_PATH != null ? AFTER_PATH.hashCode() : 0);
    result = 31 * result + (SHELVED_PATH != null ? SHELVED_PATH.hashCode() : 0);
    return result;
  }
@Override
  public int hashCode()