See discussion and example in https://github.com/quarto-dev/quarto-cli/issues/1581

In short, some **knitr** option could be useful with other computation engine and this require broader Quarto support

This could maybe even be done using Lua filter in an extension (TBC)
2022-08-22T07:49:51Z
cderv
Future
open
 Consider support for `class.source` `class.output` `attr.source` `attr.output` equivalent (not only available for knitr cells)
https://github.com/quarto-dev/quarto-cli/issues/2040