public function __construct(array $options = [])
{
parent::__construct($options);
$options = $this->getOptions();
if (!isset($options['range'])) {
throw new \Gajus\Vlad\Exception\InvalidArgumentException('"range" option is required.');
}
if (!is_numeric($options['range'])) {
throw new \Gajus\Vlad\Exception\InvalidArgumentException('Minimum boundary option must be numeric.');
}
}