anchor.diff:      let! refs = projectResults.GetUsesOfSymbol(symbol)
       return refs }
   
  -  member x.InvalidateConfiguration(options) = checker.InvalidateConfiguration(options)
  -
  +  member x.InvalidateConfiguration(options) = checker.InvalidateConfiguration(options)
positive.code: open Microsoft.FSharp.Compiler
  open Microsoft.FSharp.Compiler.SourceCodeServices
  
  // --------------------------------------------------------------------------------------
  /// Wraps the result of type-checking and provides methods for implementing
  /// various IntelliSense functions (such as completion & tool tips). Provides default
  
negative.code:           let! res = checkResults.GetToolTipTextAlternate(line, col, lineStr, identIsland, token)
            let! sym = checkResults.GetSymbolUseAtLocation(line, col, lineStr, identIsland)
            Debug.WriteLine("Result: Got something, returning")
            return sym |> Option.bind (fun sym -> let (_, startCol), (_, endCol) = Symbols.trimSymbolRegion sym (Seq.last identIsland)
                                                  Some (res, (startCol, endCol)))
        }
      member x.GetDeclarationLocation(line, col, lineStr) =
        async {
  