file.cs

        var typeArgumentListScanKind = ScanTypeArgumentList(nameOptions);
        if (typeArgumentListScanKind == ScanTypeArgumentListKind.DefiniteTypeArgumentList) return true;

        if (typeArgumentListScanKind == ScanTypeArgumentListKind.PossibleTypeArgumentList)
        {
          if ((nameOptions & NameOptions.InTypeList) != 0)
          {
            return true;
          }
        }

        return false;
        
 // =>
 
        var typeArgumentListScanKind = ScanTypeArgumentList(nameOptions);
        switch (typeArgumentListScanKind)
        {
          case ScanTypeArgumentListKind.DefiniteTypeArgumentList:
          case ScanTypeArgumentListKind.PossibleTypeArgumentList when (nameOptions & NameOptions.InTypeList) != 0:
            return true;
          default:
            return false;
        }