public function getIsoFormats($locale = null)
    {
        return [
            'LT' => $this->getTranslationMessage('formats.LT', $locale, 'h:mm A'),
            'LTS' => $this->getTranslationMessage('formats.LTS', $locale, 'h:mm:ss A'),
            'L' => $this->getTranslationMessage('formats.L', $locale, 'MM/DD/YYYY'),
            'LL' => $this->getTranslationMessage('formats.LL', $locale, 'MMMM D, YYYY'),
            'LLL' => $this->getTranslationMessage('formats.LLL', $locale, 'MMMM D, YYYY h:mm A'),
            'LLLL' => $this->getTranslationMessage('formats.LLLL', $locale, 'dddd, MMMM D, YYYY h:mm A'),
        ];
    }