Map<String, String> toAcceptedChangesMap() {
        acceptedChanges.collectEntries { change ->
            [(new Gson().toJson(change.key)): change.value]
        }
    }

    static Map<ApiChange, String> fromAcceptedChangesMap(Map<String, String> acceptedChanges) {
        acceptedChanges.collectEntries { key, value ->
            [(new Gson().fromJson(key, ApiChange)): value]
        }
    }