public override void VisitNameMemberCref(NameMemberCrefSyntax node) { base.VisitNameMemberCref(node); var sym = parent.semanticModel.GetSymbolInfo(node).Symbol; if (sym == null) { parent.AddXmlIssue(node.Span.Start, node.Span.Length, string.Format(GettextCatalog.GetString("Cannot find reference '{0}'"), node.Name)); } }