public Map<String, Indicators> getIndicatorsMap() {
        return indicatorsMap.entrySet()
                .stream()
                .map(entry ->
                        Map.entry(
                                entry.getKey(),
                                Indicators.combine(entry.getValue().values())))
                .collect(Collectors.toMap(Entry::getKey, Entry::getValue));
    }
@return Map of elementId => {@link Indicators}
stroom-pipeline/src/main/java/stroom/pipeline/errorhandler/LoggingErrorReceiver.java