code: function (req, res) {
          let groupId = req.params.id;
          if (Utils.isNullOrEmpty(server.state.get('groups[' + groupId + ']'))) {
              log.error('Invalid Group Id:', groupId);
              Utils.sendMessage(res, HttpStatus.BAD_REQUEST, JSON.stringify({ error: 'invalid group id' }));
          } else {
              log.debug('Successfully read configuration for group id:', groupId);
              Utils.sendMessage(res, HttpStatus.OK, JSON.stringify(server.state.get('groups[' + groupId + ']')));
          }
      }
docs: Fetches details of an individual group