in Confidence/src/main/java/com/spotify/confidence/PayloadMerger.kt [6:11]
override fun invoke(context: ConfidenceStruct, message: ConfidenceStruct): ConfidenceStruct {
if (message.containsKey("context")) {
throw ConfidenceError.InvalidContextInMessage()
}
return message + (mapOf("context" to ConfidenceValue.Struct(context)))
}