izzum\rules\Rule::applies PHP Метод

    public final function applies()
    {
        try {
            if ($this->shouldReturnCache()) {
                return $this->getCache();
            }
            $this->clearResult();
            $this->clearCache();
            $result = $this->_applies();
            if (is_bool($result)) {
                $this->setCache($result);
                return $result;
            } else {
                throw new Exception('A rule must return a boolean.', Exception::CODE_NONBOOLEAN);
            }
        } catch (Exception $e) {
            $this->handleException($e);
            throw $e;
        } catch (\Exception $e) {
            $e = new Exception($e->getMessage(), $e->getCode(), $e);
            $this->handleException($e);
            throw $e;
        }
    }