(
(let config (DataSource 'config))

(let res_sink (DataSink 'result))

# Dict<Uint32, Int16>> -> Dict<Uint32, Uint64> (false)
(let value (AsDict '((Uint32 '0) (Int16 '"-1"))))
(let commonType (DictType (DataType 'Uint32) (DataType 'Uint64)))
(let imlicitEqualsResult (Exists (StrictCast value commonType)))
(let world (Write! world res_sink (Key) imlicitEqualsResult '('('type))))

# Dict<Uint32, Uint16>> -> Dict<Uint32, Uint64> (true)
(let value (AsDict '((Uint32 '0) (Uint16 '0))))
(let commonType (DictType (DataType 'Uint32) (DataType 'Uint64)))
(let imlicitEqualsResult (Exists (StrictCast value commonType)))
(let world (Write! world res_sink (Key) imlicitEqualsResult '('('type))))


(let world (Commit! world res_sink))
(return world)

)