if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Verbose)
                                    TraceWriter.Trace(TraceLevel.Verbose, JsonPosition.FormatMessage(reader as IJsonLineInfo, reader.Path, "Could not find member '{0}' on {1}".FormatWith(CultureInfo.InvariantCulture, memberName, contract.UnderlyingType)), null);