@Override
  public String toString() {
    return "RecoveryInfo[" +
           "recoveredErrors: " + recoveredErrors.size() +
           ", invalidateContentIds: " + invalidateContentIds +
           ", directoriesIdsToRefresh: " + directoriesIdsToRefresh.size() +
           ", filesIdsToRefreshInvalidate: " + fileIdsToInvalidate.size() +
           '}';
  }
@Override
  public String toString()