public IEnumerable <object> Map(HttpListenerRequest request) { if (_map == null) { _map = BuildMap(_source, _destination, request.Headers, _skipNumberOfDestinationArguments); } var argumentValues = new List <object>(); foreach (var argumentVsParameter in _map) { object parameterValue = _source.GetParameterValue(request, argumentVsParameter.Key, argumentVsParameter.Value.Name, argumentVsParameter.Value.Location); argumentValues.Add(parameterValue); } return(argumentValues); }