So I was using $page->contentFile, but now it says it is deprecated. What should I use instead?

I was having this condition to check if file exist because other conditions were giving me values not good to try, so this was working for me till today,

$file_exists = (file_exists($page->contentFile($language->code())))

Today I updated to kirby 4 and it is not working anymore. Any ideas how to fix it ?

See $contenttranslation->contentFile() | Kirby CMS