void addKeyValue(final String key, final StagingValue value) {
            LOGGER.info("Adding keyValue {} {}", key, value);
            keyValueKeys.add(key);
            StagingValue valueCopy = copyValue(value);
            keyValueValues.add(valueCopy);
        }
Consume the fastInfosetValue using the various classes used in ref data lookup
stroom-pipeline/src/test/java/stroom/pipeline/refdata/TestReferenceDataFilter.java