REST API Call to query a group along with uptime or sla or report of Devices in a Group

REST API Call to query uptime or sla or report of Devices in a Group. This will be very helpful, in way that one can group devices together and then query the group only to get the devices under it and then get the uptime , sla , report of devices inside that particular group.This will be very helpful for users who have hundreds or thousands of devices and don't need to query each device or need to remember the names of the devices inside a group. So one can just query the group to get all the devices under it and then query each device withing that group to get the uptime or sla or report.

Please add this feature asap as this is very critical for the business to be able to group devices together and then be able to query groups using REST API's.