public async Task AttachLoadBalancerTargetGroups(SA_AutoScalingGroup autoScalingGroup, List <string> targetGroupARNs) { var request = new AttachLoadBalancerTargetGroupsRequest() { AutoScalingGroupName = autoScalingGroup.AutoScalingGroupName, TargetGroupARNs = targetGroupARNs }; //client.DetachLoadBalancerTargetGroupsAsync() await client.AttachLoadBalancerTargetGroupsAsync(request); }