}
        return null;
    }

    @Override
    public void write(BlockPayload block) {
        store.attach(block);
        maybeCache(block);
        dirty.put(block.getPos(), block);
    }

    private <T extends BlockPayload> void maybeCache(T block) {
        if (isCacheable(block)) {
            indexBlockCache.put(block.getPos(), block);
        }
    }