protected function getNotValidRequestExMsg($requestObj)
    {
        // We check the type first
        if (is_object($requestObj)) {
            $type = get_class($requestObj);
        } else {
            $type = gettype($requestObj);
        }

        // We return the message
        return sprintf(
            '[%s] Unknown request object. Expected was \'%s\' but got \'%s\'.',
            $this->getApiName(),
            '\RemoteHost\Api\ActionRequestInterface',
            $type
        );
    }