protected function getProcessBuilder(array $builderArguments = null)
    {
        $builder = new ProcessBuilder($builderArguments);

        //check for options
        if (isset($this->config['options'])) {
           foreach ($this->config['options'] as $key => $val) {
               $builder->setOption($key, $val);
           }
        }

        $builder->setTimeout($this->config['timeout']);

        return $builder;
    }