classJObjectField[OwnerType <: BsonRecord[OwnerType]] extends Field[JObject, OwnerType] with MandatoryTypedField[JObject] with MongoFieldFlavor[JObject]
abstract classJsonObjectField[OwnerType <: BsonRecord[OwnerType], JObjectType <: JsonObject[JObjectType]] extends Field[JObjectType, OwnerType] with MandatoryTypedField[JObjectType] with MongoFieldFlavor[JObjectType]