Reverse if language exists

Kirby 2 Questions 🤔
1

Is there anyway to just reverse this code from exists() to notExists or something? Did not find anything in the docs.

<?php
// To show pages that are not translated
pages::$methods['notTranslated'] = function($pages) {
  return $pages->filter(function($page) {
    return $page->content(site()->language()->code())->exists();
  });
};
?>
2 
<?php
// To show pages that are not translated
pages::$methods['notTranslated'] = function($pages) {
  return $pages->filter(function($page) {
    return ! $page->content(site()->language()->code())->exists();
  });
};