Implements the 'Get Multiple Devices' API.

            Param rids: a python list object of device rids.

            http://docs.exosite.com/portals/#get-multiple-devices

def get_multiple_devices(self, rids):
        """
            Implements the 'Get Multiple Devices' API.

            Param rids: a python list object of device rids.

            http://docs.exosite.com/portals/#get-multiple-devices
        """
        headers = {
                'User-Agent': self.user_agent(),
                'Content-Type': self.content_type()
        }
        headers.update(self.headers())

        url = self.portals_url()+'/users/_this/devices/' + str(rids).replace("'", "").replace(' ','')
        # print("URL: {0}".format(url))
        r = requests.get(   url,
                            headers=headers,
                            auth=self.auth())
    
        if HTTP_STATUS.OK == r.status_code:
            # TODO: loop through all rids and fix 'meta' to be dict like add_device and get_device do
            return r.json()
        else:
            print("get_multiple_devices: Something went wrong: <{0}>: {1}".format(
                        r.status_code, r.reason))
            r.raise_for_status()