SeExpr2 (the rendering library) as well as SeExpr2Editor (the widgets library) have hardcoded strings to, amongst other things, provide autocompletion information.
These need to be:
- first moved to a sort of separate place for pickup
- extracted using the Qt-only version of https://techbase.kde.org/Development/Tutorials/Localization/i18n_Build_Systems#Qt5-only:_Code_using_Qt_translation_system