(
#comment
(let config (DataSource 'config))

(let res_sink (DataSink 'result))
(let list (AsList (String 'aaa) (String 'bbb) (String 'ccc)))
(let world (Write! world res_sink (Key) (ForwardList (Iterator list (DependsOn (Uint32 '0)))) '()))
(let world (Write! world res_sink (Key) (Length (ForwardList (Iterator list (DependsOn (Uint32 '1))))) '()))
(let world (Write! world res_sink (Key) (Skip (ForwardList (Iterator list (DependsOn (Uint32 '2)))) (Uint64 '2)) '()))
(let world (Write! world res_sink (Key) (Take (ForwardList (Iterator list (DependsOn (Uint32 '3)))) (Uint64 '2)) '()))
(let world (Commit! world res_sink))
(return world)
)