private RefStoreEntry renameLegacyFeed(final RefStoreEntry entry, final String feedName) {
        // Replace 'Legacy' with 'ACTUAL_FEED_NAME (Legacy)'
        final String actualFeedName = NullSafe.get(
                entry.getMapDefinition(),
                MapDefinition::getRefStreamDefinition,
                RefStreamDefinition::getStreamId,
                this::lookUpFeedName);
        return NullSafe.getOrElse(
                actualFeedName,
                name -> name + " (" + feedName + ")",
                newName -> new RefStoreEntry(
                        newName,
                        entry.getMapDefinition(),
                        entry.getKey(),
                        entry.getValue(),
                        entry.getValueReferenceCount(),
                        entry.getRefDataProcessingInfo()),
                entry);
    }
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