code: public List<String> getAutoScalingMembers(String autoScalingGroupName) {
          Preconditions.checkArgument(autoScalingGroupName != null && !autoScalingGroupName.isEmpty());
          AutoScalingGroup autoScalingGroup = this.getAutoScalingGroup(autoScalingGroupName);
  
          List<String> list = new ArrayList<>();
          for (com.amazonaws.services.autoscaling.model.Instance instance : autoScalingGroup.getInstances()) {
              if (instance.getHealthStatus().equals("Healthy")) {
                  list.add(instance.getInstanceId());
              }
          }
          return list;
      }
docs: <br>
  Needed AWS actions:
  <ul>
  <li>autoscaling:DescribeAutoScalingGroups</li>
  </ul>
  
  @param autoScalingGroupName the name to search for
  @return the members of the given auto scaling group