code: public static <K, V> IKvStore<K, V> rocksDbCache(
              RocksDB rocksDB,
              ColumnFamilyHandle columnFamily,
              Serializer<Object> serializer) throws IOException {
          return new RocksDbCacheImpl<>(rocksDB, columnFamily, serializer);
      }
docs: Returns a RocksDb implementation of {@link IKvStore}.