presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduRecordCursor.java/KuduRecordCursor/getObject
class KuduRecordCursor:    @Override
    public Object getObject(int field)
    {
        int index = mapping(field);
        return TypeHelper.getObject(columnTypes.get(field), currentRow, index);
    }