protected function methodAllowsGuests($class, $method)
    {
        try {
            $reflection = new ReflectionClass($class);

            $method = $reflection->getMethod($method);
        } catch (Exception $e) {
            return false;
        }

        if ($method) {
            $parameters = $method->getParameters();

            return isset($parameters[0]) && $this->parameterAllowsGuests($parameters[0]);
        }

        return false;
    }