100             $fromEncoding = self::getEncoding($fromEncoding);
103         $toEncoding = self::getEncoding($toEncoding);
178         $encoding = self::getEncoding($encoding);
244         $encoding = self::getEncoding($encoding);
292         $encoding = self::getEncoding($encoding);
373         $normalizedEncoding = self::getEncoding($encoding);
517         $encoding = self::getEncoding($encoding);
527         $encoding = self::getEncoding($encoding);
548         $encoding = self::getEncoding($encoding);
595         if ('UTF-8' === $encoding = self::getEncoding($encoding)) {
646         $encoding = self::getEncoding($encoding);
689         $encoding = self::getEncoding($encoding);
773         $encoding = self::getEncoding($encoding);
806         if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
815         if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
951     private static function getEncoding($encoding)  function in Symfony\\Polyfill\\Mbstring\\Mbstring