wp-includes/PHPMailer/PHPMailer.php:2622Get the array of strings for the current language.
array public function getTranslations() { if (empty(self::$language)) { self::setLanguage(); // Set the default language. } return self::$language; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/PHPMailer/PHPMailer.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.