anchor.diff:                        ApplicableSpan = applicableSpan
                         ArgumentIndex = argumentIndex
                         ArgumentCount = argumentCount
  -                      ArgumentName = argumentName }
  +                      ArgumentName = argumentName
  +                      CurrentSignatureHelpSessionKind = MethodCall }
   
                   return! Some data
       }
  
positive.code: 
      static let oneColAfter (lp: LinePosition) = LinePosition(lp.Line,lp.Character+1)
      static let oneColBefore (lp: LinePosition) = LinePosition(lp.Line,max 0 (lp.Character-1))
  
      static member internal ProvideMethodsAsyncAux
          (
  
negative.code:             options: FSharpProjectOptions,
              filePath: string,
              textVersionHash: int,
              triggerTypedChar: char option,
              possibleCurrentSignatureHelpSessionKind: CurrentSignatureHelpSessionKind option
          ) =
          asyncMaybe {
              let textLines = sourceText.Lines
  