private static string ExtractMessage(FutError futError) { futError.ThrowIfNullArgument(); string result = "Code: " + futError.Code; if (!string.IsNullOrEmpty(futError.Reason)) result += ", Reason: " + futError.Reason; if (!string.IsNullOrEmpty(futError.Message)) result += ", Message: " + futError.Message; if (!string.IsNullOrEmpty(futError.Debug)) result += ", Debug: " + futError.Debug; if (!string.IsNullOrEmpty(futError.String)) result += ", String: " + futError.String; return result; }