anchor.diff:                          let refDocument = document.Project.Solution.GetDocument(refDocumentId)
                           let! refSourceText = refDocument.GetTextAsync(cancellationToken) |> Async.AwaitTask
                           let refTextSpan = CommonRoslynHelpers.FSharpRangeToTextSpan(refSourceText, range)
  -                        let refDisplayString = refSourceText.GetSubText(refTextSpan).ToString()
  -                        results.Add(FSharpNavigableItem(refDocument, refTextSpan, refDisplayString))
  +                        results.Add(FSharpNavigableItem(refDocument, refTextSpan))
  +
                   | None -> ()
               | None -> ()
               return results.AsEnumerable()
  
positive.code:             // REVIEW: document this use of a blocking wait on the cancellation token, explaining why it is ok
              definitionTask.Wait(cancellationToken)
              
              if definitionTask.Status = TaskStatus.RanToCompletion then
                  if definitionTask.Result.Any() then
                      let navigableItem = definitionTask.Result.First() :?> FSharpNavigableItem // F# API provides only one INavigableItem
                      for presenter in presenters do
                          presenter.DisplayResult(navigableItem.DisplayString, definitionTask.Result)
                      true
                  else
                      false
              else
                  false
  
negative.code: open Microsoft.FSharp.Compiler.Range
  open Microsoft.FSharp.Compiler.SourceCodeServices
  
  type internal FSharpNavigableItem(document: Document, textSpan: TextSpan) =
  
      interface INavigableItem with
          member this.Glyph = Glyph.BasicFile
  