public override IDocEntity SaveChanges(bool ignoreCache, DocConstantPermission permission)
 {
     ArticleId   = ArticleId?.TrimAndPruneSpaces();
     ArticleLink = ArticleLink?.TrimAndPruneSpaces();
     SearchLink  = SearchLink?.TrimAndPruneSpaces();
     return(base.SaveChanges(ignoreCache, permission));
 }