Microsoft.CodeAnalysis.ExtractMethod.AbstractExtractMethodService<TStatementSyntax, TExecutableStatementSyntax, TExpressionSyntax>.MethodExtractor.VariableSymbol.AddIdentifierTokenAnnotationPair(Roslyn.Utilities.MultiDictionary<Microsoft.CodeAnalysis.SyntaxToken, Microsoft.CodeAnalysis.SyntaxAnnotation>, System.Threading.CancellationToken)