Microsoft.CodeAnalysis.ExtractMethod.AbstractExtractMethodService<TStatementSyntax, TExecutableStatementSyntax, TExpressionSyntax>.SelectionValidator.CreateSelectionResultAsync(Microsoft.CodeAnalysis.ExtractMethod.AbstractExtractMethodService<TStatementSyntax, TExecutableStatementSyntax, TExpressionSyntax>.FinalSelectionInfo, System.Threading.CancellationToken)