86             $fromEncoding = self::getEncoding($fromEncoding);
89         $toEncoding = self::getEncoding($toEncoding);
164         $encoding = self::getEncoding($encoding);
230         $encoding = self::getEncoding($encoding);
278         $encoding = self::getEncoding($encoding);
359         $normalizedEncoding = self::getEncoding($encoding);
510         $encoding = self::getEncoding($encoding);
520         $encoding = self::getEncoding($encoding);
541         $encoding = self::getEncoding($encoding);
588         if ('UTF-8' === $encoding = self::getEncoding($encoding)) {
639         $encoding = self::getEncoding($encoding);
682         $encoding = self::getEncoding($encoding);
766         $encoding = self::getEncoding($encoding);
799         if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
808         if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
925     private static function getEncoding($encoding)  function in Symfony\\Polyfill\\Mbstring\\Mbstring