Devise\Users\Permissions\RuleManager::getClosure PHP Method

    public function getClosure($method)
    {
        if (isset($this->RuleList->closures[$method])) {
            return $this->RuleList->closures[$method];
        } else {
            throw new \Devise\Support\DeviseException('Unknown Function "' . $method . '" in RuleManager');
        }
    }