(
#comment
(let config (DataSource 'config))
(let res_sink (DataSink 'result))
(let data (SqlColumnOrderFromYson '"[StructType;[[foo;[DataType;Int32]];[bar;[DataType;String]]]]"))
(let world (Write! world res_sink (Key) (FormatType (TypeOf data))'('('type))))
(let world (Commit! world res_sink))
(return world)
)