RollingCurl\RollingCurl::addMulticurlOptions PHP Method

    public function addMulticurlOptions($multicurlOptions)
    {
        if (!is_array($multicurlOptions)) {
            throw new \InvalidArgumentException("multicurlOptions must be an array");
        }
        $this->multicurlOptions = $multicurlOptions + $this->multicurlOptions;
        return $this;
    }