presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduClientSession.java/KuduClientSession/toKuduSplit
class KuduClientSession:    private KuduSplit toKuduSplit(KuduTableHandle tableHandle, KuduScanToken token,
            int primaryKeyColumnCount)
    {
        try {
            byte[] serializedScanToken = token.serialize();
            return new KuduSplit(tableHandle, primaryKeyColumnCount, serializedScanToken);
        }
        catch (IOException e) {
            throw new PrestoException(GENERIC_INTERNAL_ERROR, e);
        }
    }