How to translate `DisplayName` and `Description` in `package.xml` in `IFW`?

[Sauntor]

I package my app using Qt Installer Framework, but I find that there's no way to translate DisplayName and Description field in the component's definition file(a.k. package.xml).
I tried ControlScript and trying change it in the signal installer.componentAdded , but the generated installer says TypeError: Cannot assign to read-only property "displayName"!

Is it really no way to translate those texts?