Ingo_Storage::updateRule PHP Method

    public function updateRule(Ingo_Rule $rule)
    {
        if (($key = $this->_getRule($rule)) === null) {
            $this->addRule($rule);
        } else {
            $this->_rules[$key] = $rule;
            $this->_store(self::STORE_UPDATE, $rule);
        }
    }