presto-kinesis/src/main/java/io/prestosql/plugin/kinesis/KinesisSplit.java/KinesisSplit/toString
class KinesisSplit:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("streamName", streamName)
                .add("messageDataFormat", messageDataFormat)
                .add("shardId", shardId)
                .add("start", start)
                .add("end", end)
                .toString();
    }