}
        };

        // Test with null dataMap
        callback.store(new DataStoreParams(), null);
        assertEquals(-1L, callback.getDocumentSize());
    }

    public void test_store_with_empty_map() {
        // Test with empty data map
        final AtomicInteger storeCount = new AtomicInteger(0);
        IndexUpdateCallback callback = new IndexUpdateCallback() {
            @Override