wp-includes/pomo/translations.php:532Translates a plural string.
$singularstring$pluralstring$countint$contextstringoptionalnullstring public function translate_plural( $singular, $plural, $count, $context = null ) { return 1 === (int) $count ? $singular : $plural; }Introduced in 2.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/pomo/translations.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.