void migrateRefStreams(final long refStreamId, final RefDataOffHeapStore destinationStore) {
        final StoreMigrator storeMigrator = new StoreMigrator(
                refStreamId,
                taskContextFactory.current(),
                keyValueStoreDb,
                rangeStoreDb,
                processingInfoDb,
                valueStore,
                mapDefinitionUIDStore,
                referenceDataConfigProvider.get(),
                this,
                destinationStore
        );

        storeMigrator.migrate();
    }
Migrate the data for refStreamId into destinationStore
stroom-pipeline/src/main/java/stroom/pipeline/refdata/store/offheapstore/RefDataOffHeapStore.java