sourceafMorphia::Converter.fan
** Implement to convert Fantom types to / from a MongoDB representation.const mixin Converter {** Converts a Mongo object to Fantom.**** 'mongoObj' is nullable so converters can create empty / default objects.abstract Obj? toFantom(Type fantomType, Obj? mongoObj)** Converts a Fantom object to its Mongo representation.**** Must return a valid BSON type (or a List or Map thereof).abstract Obj? toMongo(Obj fantomObj) }