private IEnumerable <Diagnostic> AnalyzeParameter(IParameterSymbol symbol, string commentXml, IReadOnlyList <string> phrase) { var comment = symbol.GetComment(commentXml); if (phrase.Any(_ => _ == comment)) { return(Enumerable.Empty <Diagnostic>()); } return(new[] { Issue(symbol, Constants.XmlTag.Param, phrase[0]) }); }