presto-orc/src/main/java/io/prestosql/orc/stream/MemoryOrcDataReader.java/MemoryOrcDataReader/toString
class MemoryOrcDataReader:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("orcDataSourceId", orcDataSourceId)
                .add("dataSize", data.length())
                .toString();
    }