protected function getIntlDateFormatter()
{
$dateFormat = $this->getIntlFormatConstant($this->getOption('date_format'));
$timeFormat = $this->getIntlFormatConstant($this->getOption('time_format'));
$timezone = $this->getOption('output_timezone');
return new \IntlDateFormatter($this->locale, $dateFormat, $timeFormat, $timezone);
}