protected function _genericPut($key, $value, $type)
    {
        $listName = $this->_getCorrectList($type);

        if (is_array($key)) {
            $this->$listName = array_merge($this->$listName, $key);
        } else {
            $list       = &$this->$listName;
            $list[$key] = $value;
        }

        return $this;
    }