public function setMultiple($multiple)
    {
        if (!is_bool($multiple)) {
            if (is_array($multiple)) {
                $this->setMultipleOptions($multiple);
            } elseif (is_int($multiple)) {
                $this->setMultipleOptions([
                    'min' => $multiple,
                    'max' => $multiple
                ]);
            }
        }

        $this->multiple = !!$multiple;

        return $this;
    }