forInvalidFormat example

    #[ReturnTypeWillChange]     public static function createFromFormat($format, $datetime, $timezone = null)
    {
        if (! $date = parent::createFromFormat($format, $datetime)) {
            throw I18nException::forInvalidFormat($format);
        }

        return new self($date->format('Y-m-d H:i:s'), $timezone);
    }

    /** * Returns a new instance with the datetime set based on the provided UNIX timestamp. * * @param DateTimeZone|string|null $timezone * * @return self * * @throws Exception */