(
#comment
(let config (DataSource 'config))
(let x (Read! world config (Key '('data_sinks)) '() '()))
(let world (Left! x))
(let data (Right! x))
(let res_sink (DataSink 'result))
(let world (Write! world res_sink (Key) data '()))
(let world (Commit! world res_sink))
(return world)
)