method
AddMissingImportsAsync
Microsoft.CodeAnalysis.AddMissingImports.IAddMissingImportsFeatureService.AddMissingImportsAsync(Microsoft.CodeAnalysis.Document, Microsoft.CodeAnalysis.AddMissingImports.AddMissingImportsAnalysisResult, System.IProgress<Microsoft.CodeAnalysis.CodeAnalysisProgress>, System.Threading.CancellationToken)