Microsoft.CodeAnalysis.LanguageService.AbstractDocumentationCommentService<TDocumentationCommentTriviaSyntax, TXmlNodeSyntax, TXmlAttributeSyntax, TCrefSyntax, TXmlElementSyntax, TXmlTextSyntax, TXmlEmptyElementSyntax, TXmlCrefAttributeSyntax, TXmlNameAttributeSyntax, TXmlTextAttributeSyntax>.GetIdentifier(TXmlNameAttributeSyntax)