(
(let config (DataSource 'config))

(let res_sink (DataSink 'result))
(let world (Write! world res_sink (Key) (Int32 '1) '()))
(let world (Write! world res_sink (Key) (Int32 '2) '()))
(let world (Write! world res_sink (Key) (Int32 '3) '()))
(let world (Commit! world res_sink))
(let world (Write! world res_sink (Key) (Int32 '4) '()))
(let world (Write! world res_sink (Key) (Int32 '5) '()))
(let world (Write! world res_sink (Key) (Int32 '6) '()))
(let world (Commit! world res_sink))
(return world)
)