presto-orc/src/main/java/io/prestosql/orc/OrcColumn.java/OrcColumn/toString
class OrcColumn:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("path", path)
                .add("columnId", columnId)
                .add("streamType", columnType)
                .add("dataSource", orcDataSourceId)
                .toString();
    }