https://github.com/propublica/nyc-dna-software/blob/master/FST.Common/ComparisonData.cs#L54
compareMethodIDSerializationBackupDoNotMessWithThisVariableBecauseItsAnUglyHackAroundACrappyLimitiationOfTheFCLsCrappyXMLSerializer = comparisonID;
https://github.com/propublica/nyc-dna-software/blob/master/FST.Common/ComparisonData.cs#L54