public RefDataOffHeapStore getEffectiveStore(final long refStreamId) {
        final FeedSpecificStore feedSpecificStore = metaIdToFeedStoreCache.get(refStreamId);
        // Loading cache so should not be null
        Objects.requireNonNull(feedSpecificStore);
        LOGGER.debug("getEffectiveStore() - refStreamId: {}, feedSpecificStore: {}", refStreamId, feedSpecificStore);
        return feedSpecificStore.refDataOffHeapStore;
    }
Get all ref stores keyed by feed name

@return Map of feedName => {@link RefDataOffHeapStore}
stroom-pipeline/src/main/java/stroom/pipeline/refdata/store/offheapstore/DelegatingRefDataOffHeapStore.java