public Iterator<byte[]> values(String columnFamilyName, byte[] seekOffset) {
    return new ValueIterator(rocksDB.newIterator(handleMap.get(columnFamilyName)), seekOffset);
  }
Return Iterator of key-value pairs from RocksIterator.

@param columnFamilyName Column Family Name
@param seekOffset byte array describing a key or a key prefix to seek for
amoro-format-iceberg/src/main/java/org/apache/amoro/utils/map/RocksDBBackend.java