protected function _parse($response)
    {
        $defaults = array(
            'body'    => '',
            'headers' => array('Content-Type: text/html; charset=utf-8'),
            'status'  => 200
        );
        if ( is_array($response) ) {
            $response += $defaults;
        } elseif ( is_string($response) ) {
            $defaults['body'] = $response;
            $response = $defaults;
        } else {
            throw new \LogicException('Response can\'t be NULL.');
        }
        return $response;
    }