public function getResponse()
    {
        if (! $this->_response instanceof LibBaseControllerResponse) {
            $this->_response = $this->getService($this->_response);

            if (! $this->_response instanceof LibBaseControllerResponse) {
                throw new UnexpectedValueException('Response must be an instanceof LibBaseControllerResponse');
            }
        }

        return $this->_response;
    }