Most of the conversion types were temporaries. We don't need to construct them at all as we can construct the final types right away. Some of them are real conversions. Those are modeled as actual conversion QQmlJSRegisterContents now. The remaining ones were conjuring some type out of thin air for some fallback cases. Those are better modeled as synthetic types of "Unknown" content variant. Effectively, this means we don't need a Conversion content variant anymore. Actual conversions retain the original content variant and all the other cases have their own. Task-number: QTBUG-124670 Change-Id: If07f4fda036ecbcf79c4b9e19825628a91564cf0 Reviewed-by: Olivier De Cannière <olivier.decanniere@qt.io>