code: public function params($keys, array $params)
  	{
  		foreach ((array) $keys as $key) {
  			if (is_array($key)) {
  				$key = $key[0].'::'.$key[1];
  			}
  
  			if (!isset($this->params[$key])) {
  				$this->params[$key] = $params;
  			} else {
  				$this->params[$key] = array_replace($this->params[$key], $params);
  			}
  		}
  	}
docs: {@inheritdoc}