private void logAndCompleteProcessing(final RefDataLoader refDataLoader,
                                          final Severity severity,
                                          final ProcessingState processingState,
                                          final Throwable e) {
        logAndCompleteProcessing(refDataLoader, severity, processingState, e.getMessage(), e);
    }
Loads reference data that meets the supplied criteria into the current
reference data key, value maps.
stroom-pipeline/src/main/java/stroom/pipeline/refdata/ReferenceDataLoadTaskHandler.java