@Nullable
  private static VcsRevisionNumber getRevision(@Nullable Info info) {
    VcsRevisionNumber result = null;

    if (info != null) {
      Revision revision = !info.getCommitInfo().getRevision().isValid() && info.getCopyFromRevision().isValid()
                          ? info.getCopyFromRevision()
                          : info.getRevision();

      result = new SvnRevisionNumber(revision);
    }

    return result;
  }
@Nullable
  private static VcsRevisionNumber getRevision(@Nullable Info info)